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Which of the following statement is wron...

Which of the following statement is wrong?

A

Among the following elements :
`K, Mn, Ca, Cs, Fe, Cu, Pb, Os, Y`
The number of transition element is `4`.

B

All the lanthanides and actionides belong to `III B` or the `3rd` group in the periodic table.

C

The inner transition elements belong to the `f`-block of the periodic table and are shown separately at the bottom of the periodic table.

D

The `d`-block elements have variable valency.

Text Solution

Verified by Experts

The correct Answer is:
A
(a) Statement (a) is wrong. The number of transition elements is five `(Mn, Fe, Cu, Os, Y)`.
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