GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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12 neutrons
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12 electrons
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12 protons
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24 protons and neutrons
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Detailed explanation-1: -We’ll need to add three more to this picture so that the total negative charge, negative 12, balances out the total positive charge of positive 12. And this then tells us our answer. We need to have 12 electrons for this to be a neutral atom. That’s how many will balance out the charge of the 12 protons in the nucleus.
Detailed explanation-2: -On the periodic table of elements, magnesium is represented by the symbol Mg. It has an atomic number of 12 because it has 12 protons in its nucleus.
Detailed explanation-3: -For a neutral atom, the rithber of proton equats the number of electrons. Therefore, there will be 12 electrons.
Detailed explanation-4: -Usually, we are going to talk about neutral atoms, so the number of electrons and protons will be the same. In this case, a neutral atom with 12 protons will have 12 electrons.