Exams › NEET › Chemistry

Hydrogen has an ionisation energy of 1311 kJ mol⁻¹ and for chlorine it is 1256 kJ mol⁻¹. Hydrogen forms H⁺(aq) ions but chlorine does not form Cl⁺(aq) ions because

1. H⁺ has lower hydration enthalpy
2. Cl⁺ has lower hydration enthalpy
3. Cl has high electron affinity
4. Cl has high electronegativity

Correct answer: Cl has high electron affinity

Solution

Chlorine has a high electron affinity, making it more likely to gain an electron and form Cl⁻ rather than lose an electron to form Cl⁺. This explains why Cl⁺(aq) ions are not formed.

Related NEET Chemistry questions

• The element Z = 114 has been discovered recently. It will belong to which of the following family/group and electronic configuration?
• Identify the incorrect match.
• An atom has electronic configuration 1s2 2s2 2p6 3s2 3p6 3d4 4s2, you will place it in which group?
• If the atomic number of an element is 33, it will be placed in the periodic table in the:
• The electronic configuration of an element is 1s2 2s2 2p6 3s2 3p3. What is the atomic number of the element, which is just below the above element in the periodic table?
• In the periodic table from left to right in a period, the atomic volume

⚔️ Practice NEET Chemistry free + battle 1v1 →