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  • What happens when a neutral atom is ionised into a cation, itsOption: 1 Atomic weight increasesOption:

What happens when a neutral atom is ionised into a cation, its

Option: 1

Atomic weight increases


Option: 2

Size increases


Option: 3

Size decreases


Option: 4

None of the above


Answers (1)

best_answer

When an electron is removed from a neutral atom, a positive ion (cation) is formed.
Cation is always smaller than the corresponding neutral atom. because it contains
smaller number of electrons compared to neutral atom, while both contain same
number of protons. The electrons in cations therefore experience a stronger pull
towards nucleus as compared to neutral atoms and hence cation is usually smaller. The
size of cations of same element decreases with the increase in the magnitude of positive
charge. For example. Cu^{2+}is smaller than Cu^{+}.

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Rishi

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