Oxidation number of carbon in C3O2 ,Mg2C3,are respectively
,
C3xO−22Oxidation number of O = -2
3x-4 =0
X =43
Mg+22C3x
2^x+ 3x = 0
X = −43
If a and b are rational numbers, find 'a' and 'b' when
√7−2√7+2=a√7+b
Reciprocal of −34 is
(a) 43
(b) 34
(c) −43
(d) 0