Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test General Science Chemistry Classification of Elements and Periodicity in Properties
The correct order of electronegativity among the following is:
1
C > Pb > Si = Ge = Sn
2
N < P > As > Sb
3
O > S > Se > Te > Po
4
More than one of the above
5
None of the above