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Q.

There are 10 neutrons in the nucleus of the element $_{Z} M^{19} .$ The element is

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a

Neon

b

Nitrogen

c

Oxygen

d

Fluorine

answer is D.

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Detailed Solution

$\begin{array}{l} _{Z} M^{19}; Z = 19 - 10 \\ Z = 9 \end{array}$

Eleement ${}_{9}^{19}F$

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