d and f block elements

Which block of elements are known as transition elements?

• s block

• p block

• d block

• f block

Electronic configuration of d- block element is

• n d ^1-10 ns ¹

• (n-2) d ^1-10 ns ^1-2

• (n-1) d ^1-10 ns ^1-2

• (n-1) d ^1-6 ns ^1-2

The transition elements are those elements which have ........ in their ground state or in any one of

their oxidation states.

• completely filled (partly filled) d-subshell

• incompletely filled (partly filled) d-subshell

• empty d subshell

• None of these

The d-block Elements consists of how many rows ?

• 2

• 3

• 4

• 5

Each rows of d-block elements has ........elements.

• 5

• 8

• 9

• 10

First transition series is also known as

• 3 d series

• 4 d series

• 5 d series

• None of these

Anomalous electronic configuration in the 3d series are of

• Cr and Fe

• Cu and Zn

• Fe and Cu

• Cr and Cu

Transistion elements form alloys easily because they have

• Same atomic number

• Same electronic configuration

• Nearly same atomic size

• None of the above

The property which is not characteristic of transistion metals is

• variable oxidation states.

• tendency to form complexes.

• formation of coloured compounds.

• natural radioactivity.

Which of the following has the maximum number of unpaired electrons?

• Cu²⁺

• Ti³⁺

• V³⁺

• Fe²⁺