The trend of atomic size along a period and a group in the periodic table is____

Atomic size along a period -decreases and down the group - decreases.

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Atomic size along a period -increases and down the group - increases.

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Atomic size along a period -increases and down the group - decreases.

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Atomic size along a period -decreases and down the group - increases.

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Solution

The correct option is D Atomic size along a period -decreases and down the group - increases.
In a group atomic size increases as we move down from top to bottom because of increase of shells but in case of periods as we move from left to right atomic size decreases as nuclear charge only increases but not shells.

Hence Atomic size along a period -decreases.

Down the group - Increases.

Option D is correct.

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Similar questions

(i) Electropositive nature of the element(s) increases down the group and decreases across the period
(ii) Electronegativity of the element decreases down the group and increases across the period
(iii) Atomic size increases down the group and decreases across a period (left to right)
(iv) Metallic character increases down the group and decreases across a period.
On the basis of the above trends of the Periodic Table, answer the following about the elements with atomic numbers 3 to 9.

Which is the element with the smallest atomic size

The atomic size of an atom increases across the period and decreases down the group.

Atomic size ___ down the group. (increases/decreases)

Q. Assertion :The atomic size generally increases across a period and decreases down the group. Reason: Atomic size depends upon valence shell electronic configuration.

Q. Question 48 (b)
(a) Electropositive nature of the element(s) increases down the group and decreases across the period
(b) Electronegativity of the element decreases down the group and increases across the period
(c) Atomic size increases down the group and decreases across a period (left to right)
(d) Metallic character increases down the group and decreases across a period.
On the basis of the above trends of the Periodic Table, answer the following about the elements with atomic numbers 3 to 9.

Name the most electronegative element.

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