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Q.

Choose the correct statement(s) for group-18 elements :    

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a

Density increases down the group

b

Ionisation enthalpy decreases down the group 

c

M.P (except He ) increases down the group

d

B.P increases down the group

answer is A, B, C, D.

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Detailed Solution

Ionisation enthalpy decreases down the group as atomic size increases.


Density increases down the group as atomic mass increases which is directly proportional to the density.


M.P (except He ) increases and boiling point (B.P) increases down the group.

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