D and F block elements

P block elements

P block elements

In s - and p -block elements the OS . changes in 2 units, but in transition elements it changes it chnages in units of one.(T/F)

Dihydrogen form three types of hydrides. (i)___ hydrides are formed by alkali metals and alkaline earth metals. (ii)___ hydrides are formed by non-metals and (iii)___ hydrides are formed by d abd f-block elements at elevated temperature. Complex metal hydrides such as (iv)___ and (v)___ are powerful reducing agents.

What are d -block elements? Why are they called transition metals?

How many s -block elements are known ?

Which of the following is most electronegative in p -block elements

All transition elements are d-block elements, but all d-block elements are not transition elements. Which the following is true.

The correct configuration of f-block elements is