Chapter 2

The subshell that arises after \(f\) subshell is called \(g\) subshell. What is the total number of orbitals in the shell in which the \(g\) subshell first occur? (a) 9 (b) 16 (c) 25 (d) 36

If hydrogen atom in ground state is passed-through an inhomogeneous magnetic field, the beam splits in two parts. This interaction with magnetic field shows: (a) existence of ortho and para hydrogen (b) existence of magnetic moment associated with orbital motion of electron (c) existence of spin magnetic moment of electron (d) existence of magnetic moment of proton

In iron atom, how many electrons atom have \(n=3\) and \(l=2 ?\) (a) 2 (b) 4 (c) 6 (d) 8

For similar orbitals having different values of \(n:\) (a) the most probable distance increases with increase in \(n\) (b) the most probable distance decreases with increase in \(n\) (c) the most probable distance remains constant with increase in \(n\) (d) none of these

The possible correct set of quantum numbers for the unpaired electron of \(\mathrm{Cl}\) atom is : (a) \(2,0,0,+\frac{1}{2}\) (b) \(2,1,-1,+\frac{1}{2}\) (c) \(3,1,1, \pm \frac{1}{2}\) (d) \(3,0, \pm \frac{1}{2}\)

The aufbau principle implies that a new electron will enter an orbital for which : (a) \(n\) has a lower value (b) \(l\) has a lower value (c) \((n+l)\) value is maximum (d) \((n+l)\) value is minimum

Which of the following set of quantum numbers belong to highest energy? (a) \(n=4, l=0, m=0, s=+\frac{1}{2}\) (b) \(n=2, l=0, m=0, s=+\frac{1}{2}\) (c) \(n=3, l=1, m=1, s=+\frac{1}{2}\) (d) \(n=3, l=2, m=1, s=+\frac{1}{2}\)

A subshell \(n=5, l=3\) can accommodate : (a) 10 electrons (b) 14 electrons (c) 18 electrons (d) None of these

In H-atom energy of electron is determined by: (a) only \(n\) (b) \(n, l\) (c) \(n, l, m\) (d) all the four quantum numbers.

How many electron(s) in an atom can have \(n=3, l=2 ?\) (a) 1 (b) 2 (c) 5 (d) 10