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Metals and Non-Metals

Where does no...

Question

Where does non-metallic character of elements increase? Across a period or down a group.

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Solution

Non-metallic character- Non-metallic character relates to the tendency to accept electrons during chemical reactions.
The elements which have a tendency to gain electrons are known as non-metals.
The tendency to gain electrons increases on moving across a period due to an increase in the nuclear charge and decrease in the atomic size.
Hence, the non-metallic character increases across a period.

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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.

Q. Question 48(e)
(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 element which shows maximum valency.

Why does the metallic character of elements increase on going down a group in the Periodic Table?

Q. Non mettalic character increase across the peroid while it decreases down the group . comment.

How does metallic character of elements vary on moving down a group?

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