The angular momentum of an electron in a $d$-orbital is equal to

Which one is the wrong statement?

Which one is a wrong statement?

4d, 5p, 5f and 6p orbitals are arranged in the order of decreasing energy. The correct option is:

Which of the following series of transitions in the spectrum of hydrogen atom falls in the visible region?

The number of protons, neutrons, and electrons in $^{175}_{71}$Lu$,$ respectively, are:

A particular station of All India Radio, New Delhi, broadcasts on a frequency of $1368$ kHz (kilohertz). The wavelength of the electromagnetic radiation emitted by the transmitter is:$\newline$(Speed of light, $c = 3.0 \times 10^8$ m/s)

Tritium, a radioactive isotope of hydrogen, emits which of the following particles?

The correct option for the number of body-centered unit cells in all 14 types of Bravais lattice unit cells is:

Identify the incorrect statement from the following.

If the radius of the second Bohr orbit of the He$^+$ ion is $105.8$ pm, what is the radius of the third Bohr orbit of the Li$^{2+}$ ion?

The relation between n_m (the number of permissible values of magnetic quantum number (m)) for a given value of azimuthal quantum number (l), is

Select the correct statement from the following: \newline \text{A. Atoms of all elements are composed of two fundamental particles.$\newline$ B. The mass of the electron is $9.10939 \times 10^{-31} kg. \newline$C. All the isotopes of a given element show the same chemical properties.$\newline$D. Protons and electrons are collectively known as nucleons.$\newline$E. Dalton’s atomic theory, regarded the atom as an ultimate particle of matter.$\newline$ Choose the correct answer from the options given below: