Science homework

  Finding the number of protons of an element and the ion

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Hello anyone there?
alenabeana
11 June 2012
A copy of the periodic table will help here.
ianmoth
12 June 2012
number of protons is always equal to the atomic number..
sekhon222
13 June 2012
aTake sodium as your example. Na = atom; Na+1 = ion. The atom and the ion have 11 protons = atomic (proton) number They both have 23 – 11 = 12 neutrons. But, the atom has 11 electrons = number of protons. And, the ion only has 10 electrons, so 11 (+) – 10(-) = +1. An excess charge of +1 because the ion has one less electron.
Neil G.
02 July 2012
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