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give the symbol and number of protons in one atom of:Lithium__ Iron __ Oxygen __...

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wingchun4 | Student, Grade 9 | eNotes Newbie

Posted September 23, 2012 at 9:01 PM via web

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give the symbol and number of protons in one atom of:Lithium__

Iron __

Oxygen __

Krypton_

Bromine _

Copper __

Mercury__

Helium __

the _________ equals blank so that is the blank for the question

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ncchemist | eNotes Employee

Posted September 24, 2012 at 12:42 AM (Answer #1)

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The periodic chart shows all of the elements denoted by a 1 or 2 letter symbol.  Also shown on the periodic chart is the atomic number.  This is the number of protons contained in the nucleus (and also the number of electrons present in the atom as well.  The elements you asked for are as follows:

Lithium: Li  3 protons

Iron:  Fe  26 protons

Oxygen:  O  8 protons

Krypton:  Kr  36 protons

Bromine:  Br  35 protons

Copper:  Cu  29 protons

Mercury:  Hg  80 protons

Helium:  He  2 protons

All this information is readily found on the periodic table.

Sources:

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llong4 | Student | eNoter

Posted September 23, 2012 at 11:19 PM (Answer #2)

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Lithium: Li, left-hand sided subscript of the number of protons is 3,

Iron: Fe,left-hand sided subscript of the number of protons is 26,

Oxygen: O,left-hand sided subscript of the number of protons is 8,

Krypton:Kr,left-hand sided subscript of the number of protons is 36,

Bromine:Br,left-hand sided subscript of the number of protons is 35,

Copper: Cu,left-hand sided subscript of the number of protons is 29,

Mercury:Hg,left-hand sided subscript of the number of protons is 80

Helium:He,left-hand sided subscript of the number of protons is 2.

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