In helium nucleus, there are

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13.Nuclei

easy

In helium nucleus, there are

A

$2$ protons and $2$ electrons

B

$2$ neutrons, $ 2$ protons and $2$ electrons

C

$2$ protons and $2$ neutrons

D

$2$ positrons and $2$ protons

Solution

(c) Helium nucleus $→ _2H{e^4}$.
Number of protons $= Z = 2$
Number of Neutrons $= A -Z = 2.$

Standard 12

Physics

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