Home
Class 11
CHEMISTRY
Assertion : Energy of the orbitals incr...

Assertion : Energy of the orbitals increases as
`1slt2s=2plt3s=3plt3dlt4s=4p=4d=4flt....` in a hydrogen atom.
Reason : Energy of the electron depends completely on principal quantum number.

A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true but reason is not the correct explanation of the assertion.

C

If assertion is true but reason is false.

D

If the assertion and reason both are false.

Text Solution

Verified by Experts

The correct Answer is:
C
Assertion is true but reason is false. The order `1slt2s=2plt3s=3p=3dlt...` is true for the energy of an electron in a hydrogen atom and is solely determined by Principal quantum number. For multielectron system, energy also depends on azimuthal quantum number. The stability of an electron in a multi electron atom is the net result of the attraction between the electron and the nucleus and the repulsion between the electron and the rest of the electron present. Energies of different subshell (azimuthal quantum number) present within the same principal shell are found to be in order of `sltpltdltf`.
Promotional Banner

Topper's Solved these Questions

  • STRUCTURE OF ATOM

    ERRORLESS|Exercise PAST YEARS QUESTIONS|60 Videos

  • STATES OF MATTER

    ERRORLESS|Exercise ASSERTION AND REASON|11 Videos

  • THE P-BLOCK ELEMENTS (BORON AND CARBON FAMILY)

    ERRORLESS|Exercise Assertion & Reason|10 Videos

Similar Questions

Explore conceptually related problems

The energies of orbitals in a multi -electron atom depend on the quantum number (s) ………

The energies of orbitals in hydrogen -like spectries depend on the quantum number (s) …….

STATEMENT-1 : The energy of an electron depends only upon principal quantum number in case of hydrogen and hydrogen like ions. and STATEMENT -2 : The energy of an electron depends on principal quantum number as well as azimuthal quantum number for other atoms.

The energy of an excited hydrogen atom is -3.4eV. The principal quantum number of the orbit is

4s orbitals has less energy than 3d orbital

An electron in an hydrogen atom has total energy of -3.4eV . Choose the correct statement (s):

In a hydrogen atom, which orbital is higher in energy than a 3s-orbital?