How many nodes are possible for 2s orbital?

(a)

1

(b)

2

(c)

3

(d)

zero

The subsidiary quantum number decides ______

(a)

the shape of the orbital

(b)

the orientation of the orbital

(c)

energy level of the orbital

(d)

the spin of the electron

As per Aufbau principle, arrange the orbitals in increasing order of energy __________

(a)

4p > 4d > 5s > 5p

(b)

4p < 4d < 5s < 5p

(c)

4d < 4p < 5s < 5p

(d)

4p < 5s < 4d < 5p

In multi-electron atom,4s-orbital is lower in energy than __________

(a)

3d-orbital

(b)

3p-orbital

(c)

2s-orbital

(d)

2p-orbital

Shape of an orbital is given by ____________

(a)

Principal quantum number

(b)

Spin quantum number

(c)

Azimuthal quantum number

(d)

Magnetic quantum number