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Which of the following statement (s) is/...

Which of the following statement `(s)` is`//`are correct ?

A

In Mendeleev periodic table, all groups are divided into two subgroups.

B

There is no relationship between electronic configuration of the elements and their position in the extended form of periodic table.

C

`s`-block elements have one or two electrons in their outermost shell.

D

Osmium has the maximum density among metals.

Text Solution

Verified by Experts

The correct Answer is:
C, D
Statements (c and d) are correct.
Statement (a) is false. Except zero and `VIII` groups, all other groups (I to VII) are subdivided.
Statement (b) is false. The position of element is linked with its electronic configuration in the extended form of the periodic table.
Statement (c ) is true. General electronic configuration of `s`-block elements is `ns^(1-2)`.
Statement (d) is true and it is a conceptual fact.
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