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THE ELECTRONIC CONFIGURATION OF CHLORIDE ION IS SAME AS THAT OF AN ARGON ATOM. WHAT IS...

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pankajgarg9696 | Student, Grade 10 | (Level 2) Honors

Posted June 22, 2011 at 2:52 PM via web

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THE ELECTRONIC CONFIGURATION OF CHLORIDE ION IS SAME AS THAT OF AN ARGON ATOM. WHAT IS DIFFERENCE BETWEEN TWO ??

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ndnordic | High School Teacher | (Level 2) Associate Educator

Posted June 22, 2011 at 9:13 PM (Answer #1)

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Argon is a neutral atom with atomic number of 18.  It has an electron configuration of 2 electrons in the first energy level, 8 in the second, and 8 in the third, for a total of 18 electrons. Because there are equal numbers of protons in the nucleus and electrons it has no net charge.

Chlorine is a neutral atom with atomic number of 17. It has an electron configuration of 2 electrons in the first energy level, 8 in the second, and 7 in the third, for a total of 17 electrons.

But the third energy level can hold up to 8 electrons. So when chlorine gets one more electron to fill that third level, it becomes a chloride ion with a net charge of -1.  This means it still has 17 protons in the nucleus (atomic number = number of protons) but now has a total of 18 electrons around the nucleus - just like argon its neighbor.

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she-chemist | College Teacher | (Level 2) eNoter

Posted July 3, 2011 at 10:22 AM (Answer #2)

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Excuse me, but  a difference  between  these  concepts  is enormous, since  that  argon is a matter,  and  chloride  is a  сharged particle))

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utkr940 | Student, Grade 11 | (Level 1) Honors

Posted August 25, 2011 at 5:53 PM (Answer #3)

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a chloride ion and an argon atom are very different from each other.

firstly, chloride ion is a charged particle whereas argon atom is a neutral and stable atom.

secondly, as we know that the halogens like chlorine, bromine etc, form ionic bonds with the group 1 and group 2 elements. in these cases, the bond is formed by the transfer of an electron from an electropositive to electronegative species. This transfer is done carried out directly by the atoms. instead they first form ions, by either losing or gaining electrons and the these ions combine to form the ionic compounds. but argon does not form any ionic compound.

hence a chloride ion is very highly reactive, while the argon atom is negligibly reactive. so we got a difference in terms of chemical reactivity.

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safiyullah | Student, Grade 10 | (Level 2) eNoter

Posted September 19, 2011 at 6:53 PM (Answer #4)

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The major difference between chlorine and argon is that the later is a noble gas. Argon has 18 electrons and is a stable atom. Whereas chlorine has 17 electrons and thus has an affinaty to gain electron. therefore to complete it's outer shell it combines with elements of the first and second group by forming an ionic bond. Therefore chloride ion is highly reactive while argon is not even slightly reactive. Chlorine is also a strong oxidizing agent. It itself reduces and oxidizes the other compound or element.

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pankajgarg9696 | Student, Grade 10 | (Level 2) Honors

Posted June 26, 2011 at 2:15 PM (Answer #5)

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BUT WHAT IS DIFFERENCE BETWEEN THEIR PHYSICAL & CHEMICAL PROPERTIES ???          PLZ EXPLAIN ME IN DETAIL ...

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