Elements of which of the following groups
will form anions most readily?
Show Hint
Halogens have maximum electron gain enthalpy as their atoms have just one electron less than the stable noble gas configuration.
- Oxygen family
- Nitrogen family
- Halogens
- Alkali metals
The Correct Option is C
Approach Solution - 1
Halogens have maximum electron gain enthalpy as their atoms have just one electron less than the stable noble gas configuration (ns2np6). Hence, halogens have the maximum tendency to accept the electron to form a negative ion (anion).
Therefore, option (c) is correct as halogens have the highest electronegativity.
Approach Solution -2
Elements of halogen groups can form anions most readily as they need one electron to gain the electron configuration of the nearest noble gas.
The oxygen, nitrogen, and Alkali metals need more than one electron to acquire the nearest noble gas configuration.
So, Option C) Halogens is the correct answer.
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Concepts Used:
P-Block Elements
- P block elements are those in which the last electron enters any of the three p-orbitals of their respective shells. Since a p-subshell has three degenerate p-orbitals each of which can accommodate two electrons, therefore in all there are six groups of p-block elements.
- P block elements are shiny and usually a good conductor of electricity and heat as they have a tendency to lose an electron. You will find some amazing properties of elements in a P-block element like gallium. It’s a metal that can melt in the palm of your hand. Silicon is also one of the most important metalloids of the p-block group as it is an important component of glass.
P block elements consist of:
- Group 13 Elements: Boron family
- Group 14 Elements: Carbon family
- Group 15 Elements: Nitrogen family
- Group 16 Elements: Oxygen family
- Group 17 Elements: Fluorine family
- Group 18 Elements: Neon family