Chemistry, asked by sreechanikya, 2 months ago

An atom has net charge of -1. It has 18 electrons and 20 neutrons. Its mass number is

Answers

Answered by rajeswariperumal1985

1

Answer:

answer 38

Explanation:

no of electrons =no. of protons

No. of proton =18

mass number =no. of proton +no. of neutrons

=18+20

=38

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