If the mass number of an element is 18 it contains 7 electrons what is the number of protons and neutrons in net
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Answered by
3
No. Of proton = no of electron
No. Of proton = 7
Mass no. = proton + nuetron
18 = 7+nuetron
Nuetron = 18-7
Nuetron = 9
Answered by
4
In case of element with no charge
No of protons= no of electrons
Protons= 7
No of neutrons = mass no — no of protons
Neutrons= 18—7= 11
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