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's profile pic

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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:
llong4's profile pic

Posted on

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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