Question

state no of proton,neutron and electron with atomic no 4 and and mass no 9 help ​

Answer 1

Answer:

Atomic no. 4

Mass no. 9

No. of protons = Atomic no. = 4

no. of neutrons = Mass no. - no. Of proton = 9-4 = 5

no. of electron= 4

Explanation:

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