Question:
Which among the group-15 elements does NOT exists as tetra atomic molecule?
Which among the group-15 elements does NOT exists as tetra atomic molecule?
Updated On: Jun 18, 2022
- Nitrogen
- Phosphorus
- Arsenic
- Antimony
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The Correct Option is A
Solution and Explanation
Nitrogen due to smaller size, high ionisation energy high electronegativity and the absence of $d$ -orbital does not exist as a tetra atomic molecule
Nitrogen cannot form $d \pi$ - $p \pi$ bond due to absence of $\alpha$ -orbital, so it cannot expand its covalency beyond four as the heavier members of this group can
Nitrogen cannot form $d \pi$ - $p \pi$ bond due to absence of $\alpha$ -orbital, so it cannot expand its covalency beyond four as the heavier members of this group can
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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