What is the atomic mass of Calcium?
A24
B23
C32
D40
Answer & Solution
Correct answer: D. 40
1. Calcium has the symbol Ca and atomic number 20.
2. Its standard atomic mass is approximately 40.
3. So the atomic mass of calcium is 40.
_Source: RRB Group D CEN-02/2018 PYQ, Q.99._
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