SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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If an atom has 12 protons, which of the following must it also have to be considered a neutral atom?
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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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Explanation:
Detailed explanation-1: -For a neutral atom, the rithber of proton equats the number of electrons. Therefore, there will be 12 electrons.
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: -The number of protons identifies the element. The protons (atomic #) never changes for an element. If the proton number for the element is 12 it can only be identified as Magnesium.
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