SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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If an atom has 10 protons, 10 neutrons, and 10 electrons, what is the mass of the atom?
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10
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20
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30
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None of the above
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Explanation:
Detailed explanation-1: -So, the mass number of the element is 22.
Detailed explanation-2: -Mass number = No. of protons + No. of Neutrons. Mass number = 10 + 12 = 22.
Detailed explanation-3: -Nuclide. An example is neon, which has the element symbol Ne, atomic number 10 and mass number 20.
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