The measurement of the electron position is associated with an uncertainty in momentum, which is equal to 1 $$ \times $$ 10^$$-$$18 g cm s^$$-$$1. The uncertainty in electron velocity is (mass of an electron is 9 $$ \times $$ 10^$$-$$28 g)

If uncertainty in position and momentum are equal, then uncertainty in velocity is

Consider the following sets of quantum numbers :

	n		l		m		s
(i)	3		0		0		+1/2
(ii)	2		2		1		+1/2
(iii)	4		3		-2		-1/2
(iv)	1		0		-1		-1/2
(v)	3		2		3		+1/2

Which of the following sets of quantum number is not possible ?

The orientation of an atomic orbital is governed by