Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test General Science Chemistry Chemical Bond and Molecular Structure
The ratio of radius of nucleus of the radius of atom is of the order of
1
105
2
106
3
10-5
4
More than one of the above
5
None of the above