alleryWhat 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._
Keep practising Chemistry
Browse all Chemistry questions for Agniveer Army, or explore more Science topics.
Related questions
Knock out the false chemistry linesPlace each element in its groupName the process in which a metal is attacked by surrounding substances such as moisture, Which of the following elements could not find a fixed place in Mendeleev's periodic tableWhich of the following metals is in liquid state at room temperature?Tungsten's melting point is approximately:Substances whose odour changes in acidic or basic media are called:Who proposed the word 'atom'?