JEE CHEMISTRY MCQ: STRUCTURE OF ATOM

1 Medium

1 of 1

Analyzing +4 | -1

n,\,\,l

and

m

values of orbitals A and B are given below.

\begin{array}{cccccccccccccccccccc} {}&n&l&m \\ {\text{A}}&3&2&0 \\ {\text{B}}&3&1&0 \end{array}

Which statement about A and B orbitals is incorrect?

a. A has more energy than B

b. A possess electron density along axial direction only

c. B has one angular node and one radial node

d. Probability of finding electron density in B is zero along XZ-plane.

View answer and explanation

Correct option: D

b & d

The correct answer is D (b & d) because a 3d orbital does not necessarily have electron density only along the axial direction, and the probability of finding electron density in a 3p orbital is not zero along the XZ-plane (it's zero along the XY plane for 3pz).

More Questions from STRUCTURE OF ATOM

Practice All Chapter MCQs →

Which of the following is paramagnetic? The time taken by the electron in one complete revolution in the

n^{\text {th }}

Bohr's orbit of the hydrogen atom is The candela is the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency '

\mathrm{A}

\times 10^{12}

hertz and that has a radiant intensity in that direction of

\frac{1}{{ }^{\prime} \mathrm{B}^{\prime}}

watt per steradian. 'A' and 'B' are respectively Quantum number which defines the orientation of orbital present in a subshell is Maximum number of electrons associated with

\ell = 1,\,\,m = 0

in magnesium atom is The nucleus and an atom can be assumed to be spherical. The radius of the nucleus of mass no. A is given by

1.25 \times {10^{ - 13}} \times {A^{1/3}}\mathrm{cm}.

. The atomic radius of atom is 1 Å. If the mass no. is 64, the fraction of the atomic volume that is occupied by nucleus is: