Homework Help

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

wingchun4's profile pic

Posted via web

dislike 1 like

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

2 Answers | Add Yours

ncchemist's profile pic

Posted (Answer #1)

dislike 1 like

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 (Answer #2)

dislike 0 like

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.

Join to answer this question

Join a community of thousands of dedicated teachers and students.

Join eNotes