Question

Which element is a metalloid?

• A. Z=5
• B. Z=10
• C. Z=15
• D. Z=20

Answer 1

The correct option is A

Z=5

Explanation for the correct option:

option a) Z=5 is boron which is a metalloid.It comes under group 13.

Explanation for the incorrect options:

b)Z=10 is neon which is a noble gas

c)Z=15 is phosphorus which is a non metal.

d)Z=20 is calcium which is a metal.

Thus the correct option is a.