Question

neon has atomic mass of 20u and 10 protons in its nucleus.how many neutron does it have?
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Answer 1

Answer:

10 neutron it have

Explanation:

As we know that

atomic mass= mass no

20= 20

mass no=proton + neutron

proton-10 (given)

20=10+neutron

neutron=20-10= 10

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