Question

Q.4 An atom has its atomic number 18 and atomic mass number 40. Find out the number of protons,
neutrons and electrons and represent the element symbolically. Also draw its atomic structure.​

Answer 1

Explanation:

Given atomic number = 18

so,

number of protons = 18

Since,

An atom is neutral,

no. of electrons =18

Now,

Mass number=40

so,

no. of neutrons = 40-18

=22

so,

electronic configuration = 2,8,8

Answer 2

Answer:

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