0

Guest

Courses New

Why the melting point of Gr. 15 element increases from N to As and then decreases to Bi?

Why the melting point of Gr. 15 element increases from N to As and then decreases to Bi?

Grade:12th pass

1 Answers

Gaurav
askIITians Faculty 164 Points
9 years ago
Hello Student
Melting point highly depends on the number of unpaired electrons. Higher the number of unpaired electrons higher would be the melting point. Melting point increases down the group as we move from N to As as these elements have tendency to involve electrons from both s and p orbitals in bonding but as we move further down the group from Sb to Bi the s orbital electrons are not involved in bonding due to weak shielding effect of d orbitals and thus the melting point decreases.

Think You Can Provide A Better Answer ?

Other Related Questions on Inorganic Chemistry

View all Questions »

ASK QUESTION

Get your questions answered by the expert for free

Answer and earn gift vouchers

Win Gift vouchers upto Rs 500/-

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

Live 1-1 coding classes to unleash the Creator in your Child

Click Here Know More

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Click Here Know More