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## Periodic Table

### Chemistry

#### Previous Years Questions

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The correct pair of electron affinity order is
WB JEE 2022
5.75 mg of sodium vapour is converted to sodium ion. If the ionisation energy of sodium is 490 kJ mol$$-$$1 and atomic w...
WB JEE 2021
Which of the following statements is not true for the reaction, 2F2 + 2H2O $$\to$$ 4HF + O2 ?...
WB JEE 2020
The first electron affinity of C, N and O will be of the order
WB JEE 2019
Which of these species will have non-zero magnetic moment?
WB JEE 2019
The melting points of (i) BeCl2 (ii) CaCl2 and (iii) HgCl2 follows the order
WB JEE 2019
The second ionization energy of the following elements follows the order
WB JEE 2019
Out of the following outer electronic configurations of atoms, the highest oxidation state is achieved by which one?
WB JEE 2018
Which of the following atoms should have the highest 1st electron affinity?
WB JEE 2017

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