EASY
Earn 100

What would be the IUPAC name and symbol for the element with atomic number 124

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Important Questions on Classification of Elements and Periodicity in Properties

MEDIUM
The electronic configurations of bivalent europium and trivalent cerium are:
(atomic number: Xe=54 , Ce=58 , Eu=63)
EASY
For the following Assertion and Reason, the correct option is:
Assertion: For hydrogenation reactions, the catalytic activity increases from Group 5 to Group 11 metals with maximum activity shown by Group 7-9 elements.
Reason: The reactants are most strongly adsorbed on group 7-9 elements.
EASY
The element Z=114 has been discovered recently. It will belong to which of the following family/group and electronic configuration?
MEDIUM

Consider the following radioactive decays

I. U92-α90Th and

II. 90Th-αRa88

In which case group of parent and daughter elements remains unchanged.

EASY
The last element of the p- block in 6th period is represented by the outermost electronic configuration: