Exams › NEET › Chemistry

Which one of the following ions will be the smallest in size?

1. Na+
2. Mg2+
3. F−
4. O2−

Correct answer: Mg2+

Solution

Mg2+ is the smallest because it has the highest positive charge, leading to the greatest effective nuclear attraction and smallest ionic radius among the given ions.

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 →