Previous Years Questions
MCQ (Single Correct Answer)
The correct pair of electron affinity order is
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 ...
Which of the following statements is not true for the reaction, 2F2 + 2H2O $$ \to $$ 4HF + O2 ?
The second ionization energy of the following elements follows the order
The melting points of (i) BeCl2 (ii) CaCl2 and (iii) HgCl2 follows the order
Which of these species will have non-zero magnetic moment?
The first electron affinity of C, N and O will be of the order
Out of the following outer electronic configurations of atoms, the highest oxidation state is achieved by which one?
Which of the following atoms should have the highest 1st electron affinity?