Periodic Table · Chemistry · WB JEE
MCQ (Single Correct Answer)
1
4f$$^2$$ electronic configuration is found in
WB JEE 2023
2
Suppose a gaseous mixture of He, Ne, Ar and Kr is treated with photons of the frequency appropriate to ionize Ar. What ion(s) will be present in the mixture?
WB JEE 2023
3
The correct pair of electron affinity order is
WB JEE 2022
4
5.75 mg of sodium vapour is converted to sodium ion. If the ionisation energy of sodium is 490 kJ mol$$-$$1 and atomic weight is 23 units, the amount of energy needed for this conversion will be
WB JEE 2021
5
Which of the following statements is not true for the reaction, 2F2 + 2H2O $$ \to $$ 4HF + O2 ?
WB JEE 2020
6
The second ionization energy of the following elements follows the order
WB JEE 2019
7
The melting points of (i) BeCl2 (ii) CaCl2 and (iii) HgCl2 follows the order
WB JEE 2019
8
Which of these species will have non-zero magnetic moment?
WB JEE 2019
9
The first electron affinity of C, N and O will be of the order
WB JEE 2019
10
Out of the following outer electronic configurations of atoms, the highest oxidation state is achieved by which one?
WB JEE 2018
11
Which of the following atoms should have the highest 1st electron affinity?
WB JEE 2017
12
Which of the following arrangements is correct in respect of solubility in water?
WB JEE 2016
13
An element X belongs to fourth period and fifteenth group of the periodic table. Which of the following statements is true?
WB JEE 2016