Periodic Table Questions and Answers

Periodic Table

Both elements, sodium (Na) and potassium (K) lie in the Group 1 column of the Periodic Table, which contains the members of the Alkali Metals family. Members within a family, or column, of...

Latest answer posted March 2, 2010 3:39 am UTC

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Periodic Table

Boron, which is number 5 on the chart, is identified by the letter B. It is a naturally occurring element that is found in sedimentary rocks, coal, shale, and some soils. The most common use of...

Latest answer posted April 8, 2008 11:56 pm UTC

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Periodic Table

All elements in Group 13 have three electrons in their outermost energy level. The two most popular elements in this group are Boron and Aluminum. Both Boron and Aluminium have 3 valence electrons,...

Latest answer posted April 20, 2012 5:19 am UTC

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Periodic Table

Group 1 of the Periodic Table, or the Alkali Metals, include lithium, sodium, potassium, rubidium, caesium, and francium. The columns of the Table reflect a "family" of elements; each...

Latest answer posted January 22, 2009 9:17 pm UTC

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Periodic Table

The 1st ionization energy, (1st ie) the amount of energy needed to remove the most energetic electron, increases going bottom to top (up the family) and left to right (across the period) on the...

Latest answer posted December 7, 2008 1:01 pm UTC

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Periodic Table

Ionic bonding occurs as a result of an electron exchange. Most atomic nuclei do not posses a stable electronic configuration in their outer orbits; they either have an excess or deficiency. Those...

Latest answer posted December 9, 2009 9:12 pm UTC

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Periodic Table

Iron, as a transition metal, shares the same outer electronic configuration as the rest of the metals in its class, meaning the 4s orbitals are all the same. Only the inner 3d orbitals change...

Latest answer posted December 13, 2008 1:38 pm UTC

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Periodic Table

Hydrogen is found in massive quantities all over the universe. It is found in many places right here on Earth. So, it should come as no surprise that it is used in so many of the products that we...

Latest answer posted March 15, 2009 11:18 pm UTC

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Periodic Table

The six unreactive elements, of which Argon is a member, as a class are referred to as the "Noble" or Inert Gases, found on the rightmost column of the Periodic Table. As elements, none...

Latest answer posted November 30, 2008 9:18 am UTC

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Periodic Table

Generally, the radius of an atom decreases going across a row of the Periodic Table, and increases going down a column of the table. Since more positively-charged protons are being added to the...

Latest answer posted November 23, 2009 5:29 am UTC

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Periodic Table

The columns in the Periodic Table, describing elements with similar chemical properties, group elements that have the same electronic configuration in their outer shells into a family; the rows in...

Latest answer posted January 10, 2009 1:02 pm UTC

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Periodic Table

Each group or family on the periodic table is a vertical column. In addition to the other poster's information, it might help to know that scientists further sub-divide the nonmetal groups by...

Latest answer posted October 26, 2009 1:35 pm UTC

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Periodic Table

A liquid is a state of matter where atoms or molecules are not rigidly held in place (that's a solid) nor are they not held in place at all (that's a gas.) Liquids are the in-between state where...

Latest answer posted December 16, 2008 2:58 am UTC

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Periodic Table

If you look at the convenient chart located just under the main periodic table on the study guide pasted below, you see that the metals extend from the far left side all the way over to the right...

Latest answer posted April 24, 2010 4:53 am UTC

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Periodic Table

Sulphur has 16 electrons about its nucleus. These orbit around at different energy levels, called shells, the innermost shell being the most tightly bound to the positively charged nucleus. Two...

Latest answer posted October 24, 2009 9:34 am UTC

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Periodic Table

In general, this is true -- atomic radius decreases going across the rows, and increases going down the columns of the Periodic Table. As more protons, which are positively charged, are added to...

Latest answer posted December 3, 2009 6:58 pm UTC

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Periodic Table

Although people tend to think of things such as gold and platinum as expensive, some of the radioactive elements only exist when artificially created. As such, they are extremely expensive to...

Latest answer posted November 18, 2008 10:55 am UTC

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Periodic Table

There are 5 elements that are liquid at 38 degrees Celsius. Four of these are metals, all of which can be used in thermometers.Cesium (atomic number 55) and Francium (atomic number 87) are Alkali...

Latest answer posted December 16, 2008 10:50 am UTC

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Periodic Table

The groups of the periodic table are the vertical columns, running up and down. There are eighteen groups; each of which is given a different family name. The group / family names are as follows:...

Latest answer posted March 17, 2009 9:46 am UTC

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Periodic Table

The Alkali metal Lithium, third element of the Periodic Table, is a very soft, silvery metal. It has a melting/freezing point of 180.54°C and a liquefying/boiling point of about 1,335°C. So...

Latest answer posted January 21, 2009 10:36 am UTC

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Periodic Table

All 3 are elements. Calcium is an alkaline earth metal; tin and aluminum are metals. All 3 elements are solid at normal temperatures, and don't melt until they reach a high temperature (449...

Latest answer posted November 20, 2008 4:04 am UTC

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Periodic Table

One way is that since each element emits a characteristic pattern of electromagnetic radiation, using the techniques of mass spectroscopy, every element in a given test compound can be identified...

Latest answer posted November 19, 2008 11:14 am UTC

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Periodic Table

There are 5 elements of the halogen family in column 17 of the Periodic Table. The word "halogen" comes from the Greek meaning "to produce sea salt," and all of them, with one exception, are very...

Latest answer posted December 14, 2009 1:39 pm UTC

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Periodic Table

Positively charged protons are what comprise the nucleus of an atom, along with the electrically neutral neutrons. Generally, protons are stable forms of matter, and their stability is what allows...

Latest answer posted November 19, 2009 3:03 am UTC

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Periodic Table

I'm guessing you are referring to Bohr's model as Bohr's law. Bohr's law states, "The crazier the theory, the more likely it is to be correct." It is attributed to the same scientists...

Latest answer posted November 18, 2008 7:41 am UTC

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Periodic Table

Element #35 is Bromine, an member of the halogen family Its standard atomic mass is 79.904 amu, and it possesses 10 isotopes. The most stable and widespread form of Bromine has 45 neutrons, for...

Latest answer posted November 25, 2008 11:40 pm UTC

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Periodic Table

Atoms can have a variable number of neutrons. That is why the atomic mass is not a whole number; it represents an average weight of all the atoms of an element, which may have different numbers of...

Latest answer posted October 29, 2009 1:03 am UTC

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Periodic Table

The Electron Configuration of any given element follows precise rules regarding the placement of electrons around the atom's nucleus. Each electron follows a path around the center of the atom, or...

Latest answer posted May 3, 2011 1:43 pm UTC

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Periodic Table

Triple distillation is the most common refining method for mercury. In this process, the temperature of liquid mercury is precisely controlled and raised. Some impurities evaporate first, and are...

Latest answer posted June 6, 2009 1:54 am UTC

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Periodic Table

Arsenic is actually an element, and therefore isn't really "made." It's number 33 on the Periodic Table, and has the shorthand abbreviation of "As." Although it can be found in a pure state, it...

Latest answer posted November 7, 2009 1:12 am UTC

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Periodic Table

I'm not sure what property you are referring to? Mercury meets all properties of being a metal. It is the only metal that is at a liquid form at normal temperatures on a account of its...

Latest answer posted May 25, 2013 2:43 pm UTC

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Periodic Table

Henry Cavendish, a brilliant recluse, is credited with its discovery for communicating his work in 1766 to the Royal Society in England with an inflammable gas produced by the action of acids on...

Latest answer posted November 28, 2008 4:52 am UTC

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Periodic Table

Nitrogen (N) is a gaseous, non-metal element. Elements, by definition, are bits of matter that are composed of roughly the same type of atom, and cannot chemically be broken down into anything...

Latest answer posted March 2, 2010 3:58 am UTC

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Periodic Table

The alkaline earth metals are another name for the group 2 metals in the periodic table. They consist of beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra)....

Latest answer posted November 30, 2011 10:25 am UTC

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Periodic Table

Isotopes (from Greek words meaning "same position") refer to the different versions of a given element. They occupy the "same position" of an element in the Periodic Table, and...

Latest answer posted January 17, 2009 9:25 am UTC

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Periodic Table

Chemical element names have a variety of etymological origins, including Greek, Latin, Arabic, and German. Your question addresses Latin names, so let's look at the Periodic Table and find some of...

Latest answer posted October 20, 2008 3:28 pm UTC

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Periodic Table

Metalloids are the class of elements in the Periodic Table of the Elements that separate metals from non-metals. The elements on either side of the metalloids are either metallic or non-metallic,...

Latest answer posted August 14, 2012 10:46 pm UTC

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Periodic Table

The Periodic Table arranges all the known elements according to their atomic weights. Atomic weights are simply identification tags that tell us how many protons and electrons an atom has. This...

Latest answer posted November 4, 2011 11:06 am UTC

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Periodic Table

Elements cannot be made. By definition, elements are "fundamental, essential or irreducible" components of the earth. Therefore, elements cannot be created or reduced by normal chemical means....

Latest answer posted September 10, 2008 11:27 am UTC

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Periodic Table

The temperature at which various elements change phase depends on both the temperature they are at as well as the pressure they are placed under. If the pressure and temperature of any element is...

Latest answer posted July 23, 2011 2:15 pm UTC

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Periodic Table

Let's look at both Al and S on the periodic table. Their positions on the table will tell us what we need to know. Aluminum (Al) is in group 13. This means that it has three valence electrons,...

Latest answer posted March 26, 2013 11:20 pm UTC

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Periodic Table

This answer is in case you don't know what cations and anions are. Both have to do with when an atom (or molecule) gains or loses electrons, which means there are more or less electrons in the...

Latest answer posted November 19, 2008 11:04 am UTC

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Periodic Table

I'll go with the definition of science, as I think that is what you are after. Science is an accumulation of knowledge about how the natural world works. The body of knowledge is changeable, as new...

Latest answer posted January 8, 2010 1:39 am UTC

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