Question

-group 15 elements
-occurance
-electronic configration
-atomic and ionic radii
-ionisation enthalpy ​

Answer 1

Answer:

In the structure of MoS2, the S atoms are arranged in close-paced layers that repeat ... accounts for the bulk of the lattice enthalpy of an ionic compound.

Answer 2

Explanation:

• Group 15 elements include Nitrogen, phosphorus, arsenic antimony, and bismuth.
• Nitrogen occupied 78% volume of the atmosphere. Phosphorus does not present in the free state. And other elements are not very abundant.
• electronic configuration - ns²np³
• atomic and ionic radii - In groups, all the ions have the same charge because they have the same valency. hence ionic radius and atomic charge increase as new shells are added.
• ionisation enthalpy - Ionisation energy ( energy required to remove electrons) decreases down the groups as atomic radii increase.