Choose the correct statement - Vidyadip

MCQ

Choose the correct statement

✓
In thorium, the last electron enters $d$ subshell but still it belongs to the $f$ block of the modern periodic table.
B
The modern periodic table is based on the increasing order of the atomic mass
C
The ionization energy of an atom can be lower than its electron affinity
D
None of these

✓

Answer

Correct option: A.

In thorium, the last electron enters $d$ subshell but still it belongs to the $f$ block of the modern periodic table.

a

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from 3. Classification of elements and periodicity in properties→3. Classification of elements and periodicity in properties — all question types→Chemistry STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

The $IUPAC$ name of the compound $CH_2 = CH -CH (CH_3)_2$ is

Which of the following is incorrect statement ?

$74.5 \,g$ of a metallic chloride contain $35.5\, g$ of chlorine. The equivalent weight of the metal is

Assertion :A spectral line will be observed for a $2p_x-2p_y$ transition.
Reason : The energy is released in the form of wave of light when electron drops from $2p_x$ to $2p_y$ orbital.

The reaction of propene with HOCl(Cl₂ + H₂O) proceeds through intermediate:

Which of the following fact is directly explained by the statement 'oxygen is a smaller atom than sulphur' ?

Which of the following compounds is not linear

A gas decolourises Bayer's reagent but does not react with Tollen's reagent, this gas is

Markownikoff's rule provides guidance of addition of $HBr$ on

Which of the following do not show hyperconjugation?