For an element , A = 34 and N = 19, What is the atomic number of … - Vidyadip

MCQ

For an element $, A = 34$ and $N = 19,$ What is the atomic number of the element?

A
$34$
B
$19$
C
$53$
✓
$15$

✓

Answer

Correct option: D.

$15$

A is the mass number and $N$ is the number of neutrons.
$A = Z + N$
$Z = A − N$
$Z = 34 − 19$
$Z = 15$

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