Mg is atomic number 12. So the mass number of 24 has 12 protons and 12 neutrons since mass number = protons + neutrons. The neutral atom has 12 electrons, also; therefore, the 2+ ion will have 10 electrons.
You can check out your answers this way. (You already know 12 p is correct.)
Since the charge of the neutral atom must be zero
12+ for protons
12- for electrons
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0 charge for atom.
Take your answers of 10e and 14e.
12+ for protons
14- for electrons
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2- charge and you wanted 2+ charge. Try the other.
12+ for protons
10- for electrons
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2+ charge which is what you wanted.
How many protons, neutrons, and electrons are in 24 +2
Mg
12 is it 12p, 14e- or 10 e?
3 answers
thanks.
The charge and identity of an ion with 16 protons, 18 electrons and 17 neutrons would be?
1 answer