OBJECTIVE LIFE SCIENCE
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is the atomic number of Calcium?
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20
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10
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0
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4
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Explanation:
Detailed explanation-1: -The mass number of an atom is the sum of the number of protons (p) and neutrons (n). Calcium has 20 protons and 20 neutrons. Therefore, the mass number of calcium = p + n = 20 + 20 = 40.
Detailed explanation-2: -The atomic number of calcium is 20.So its electronic configuration is 2, 8, 8, 2.
Detailed explanation-3: -Calcium (Ca) has atomic number 20 and mass number 40 .
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