Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति
JEE Main & Advanced
Chemistry
Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति
Question Bank
Topic Test - Periodic Table
question_answer
Covalent radius of nitrogen is 70 pm. Hence, covalent radius of boron is about:
A)60 pm
B)110 pm
C)50 pm
D)40 pm
Correct Answer:
B
Solution :
[b] Radius decreases along a period from left to right thus \[B(Z=5)>N(Z=7)\].