Question

Consider the following statements :
I. The shape of the orbitals is given by magnetic quantum number.
II. In an atom, all electrons travel with the same velocity.
III. If the value of $l=0$, the electron distribution is spherical.
IV. Angular momentum of $1 s, 2 s, 3 s$ electrons are equal.
Choose the correct statements and select the correct option.

• A. $II$ and $IV$
• B. $I$ and $III$
• C. $I$ and $II$
• D. $III$ and $IV$

Answer 1

Answer: (D)

Statements $III$ and $IV$ are correct, while the other statements are incorrect.
Corrected form are as follows :
$I$. The shape of the orbitals is given by azimuthal quantum number.
$II$. In an atom, all electrons travel with the different velocity.