The number of electrons and neutrons of an element is 18 and 20 respectively. Its mass number is

The number of electrons and neutrons of an element is 18 and 20 respec

1.	The number of electrons and neutrons of an element is 18 and 20 respectively. Its mass number is
A.	2
B.	17
C.	37
D.	38
Answer» E.

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The number of electrons and neutrons of an element is 18 and 20 respectively. Its mass number is

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