Question

Helium atom has an atomic mass of 4 u and two protons in its nucleus. How many neutrons does it have?​

Answer 1

Answer:

2 neutron bro

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samjo jara

Answer 2

Step-by-step explanation:

${\boxed { \red{\fbox{your}{{{ \: \green{question}}}}}}}$

Helium atom has an atomic mass of 4 u and two protons in its nucleus. How many neutrons does it have?

${ \boxed{ \fbox{ \red{A}{ \fbox{ \green{n}{ \fbox{ \pink{s}{ \fbox{ \purple{w}{ \fbox{ \blue{e}{r}}}}}}}}}}}}$

Given:

Atomic mass of helium atom = 4u, 2 protons in helium nucleus

Atomic mass = number of protons + number of neutrons

$\rightarrow4 = 2 + number \\ of \: neutrons$

$\green{Number \: of \: neutrons \: = 4 – 2}$

${ \boxed{ \purple{ \Rightarrow 2}}}$

$\large \bold{Hence, }$

${ \boxed{ \large {\bold {\red{Helium \: has \: 2 \: neutrons}}}}}$