Question

an element may be represented as 40 18 X, find the no. of electrons,protons and neutrons in this atom . give its electronic configuration.
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Answer 1

Answer:Number of electrons = 18

Number of protons = 18

Mass number of X=40, therefore,

Number of neutrons = 40 – 18 = 22

Explanation:

Answer 2

Answer:

Electrons= 18

Protons=18

Mass number of X= 40

:. Nutrons= 40-18

=22

Explanation:

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