HARD
11th CBSE
IMPORTANT
Earn 100

The electronic configuration of (atomic number ), (atomic number ) and (atomic number ) are
(a) and
(b) and
(c) and
(d) and

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Important Questions on Classification of Elements and Periodicity in Properties
HARD
11th CBSE
IMPORTANT
The outer electronic configuration of (Atomic number ) is

HARD
11th CBSE
IMPORTANT
(atomic number ) has _____ unpaired electrons with sum of spin _____.

MEDIUM
11th CBSE
IMPORTANT
The electronic configuration of is (atomic number of is )

HARD
11th CBSE
IMPORTANT
The atomic number of cerium () is . The correct electronic configuration of ion is

EASY
11th CBSE
IMPORTANT
The element with atomic number has recently been discovered. Its electronic configuration is similar to that of

HARD
11th CBSE
IMPORTANT
An element with atomic number has been discovered recently. Which of the following electronic configurations will it possess?

EASY
11th CBSE
IMPORTANT
The element has been discovered recently. It will belong to which of the following family/ group and electronic configuration?

HARD
11th CBSE
IMPORTANT
The element with atomic number if discovered would be placed in
