You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Chemistry

Quantum Numbers

Assertion :En...

Question

Assertion :Energy of electron is largely determined by its principal quantum number. Reason: Principal quantum number is a measure of the most possible distance of finding the electron around the nucleus.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Assertion is correct but Reason is incorrect

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Both Assertion and Reason are incorrect

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Energy of electron is $- 13.6 \frac{Z^{2}}{n^{2}}$ . So it is largely determined by its principal quantum number.

Suggest Corrections

Similar questions

Q. Assertion : Two electrons of helium atom are placed in only one shell but three electrons of lithium need two shells.
Reason: A shell can have maximum

{2n}^{2}

electrons.

Q. Assertion: The compressibility factor for

H_{2}

and

H e

(1 + \frac{P b}{R T})

Reason: The compressibility factor for

H_{2}

and

H e

can be derived from Van der Waal's equation.

Assertion (A) Order and molecularity are same.

Reason (R) Order is determined experimentally and molecularity is the sum of the stoichimetric coeffcient of rate determining elementary step.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

ASSERTION: n-Pentane and n-Hexane belong to a homologous series.

REASON: n-Pentane and n-Hexane belong to the same class of hydrocarbons and they differ by a - $C H_{2}$ - group.

Q. Assertion: The impurities such as

{SiO}_{2}

present in iron ore is removed by

{CaCO}_{3}

.

Reason:

CaO

formed by decomposition of

{CaCO}_{3}

reacts with

{SiO}_{2}

to form slag.

Join BYJU'S Learning Program

Assertion :Energy of electron is largely determined by its principal quantum number. Reason: Principal quantum number is a measure of the most possible distance of finding the electron around the nucleus.

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for AssertionEnergy of electron is −13.6Z2n2. So it is largely determined by its principal quantum number.

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Energy of electron is $- 13.6 \frac{Z^{2}}{n^{2}}$ . So it is largely determined by its principal quantum number.