Home
Class 11
CHEMISTRY
Assertion: (A) Generally, ionsiation ent...

Assertion: (A) Generally, ionsiation enthalpy increases from left to right in a period.
Reason ( R) When successive electrons are added to the orbitals in the same principle quantum level, the shielding effect of inner core of electrons does not increase very much to compensate for the increased attraction of the electrons to the nucleus.

A

Assertion is correct statement and reason is wrong statement.

B

Assertion and reason both are correct statements and reason is correct explanation of Assertion.

C

Assertion and reason both are wrong statements.

D

Assertion and wrong statements and reason is correct statements.

Text Solution

Verified by Experts

The correct Answer is:
A
Assertion and reason both are correct statements and reason is correct explanation of assertion. Ionisation enthalpy increases along a period because effective nuclear charge increases and atomic size decreases.
Promotional Banner

Topper's Solved these Questions

  • CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES.

    NCERT EXEMPLAR|Exercise Long answer types question|7 Videos

  • CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES.

    NCERT EXEMPLAR|Exercise Matching the Columns|3 Videos

  • CHEMICAL BONDING AND MOLECULAR STRUCTURE

    NCERT EXEMPLAR|Exercise Long Answer type questions|9 Videos

  • ENVIRONMENTAL CHEMISTRY

    NCERT EXEMPLAR|Exercise Long Answer Type|5 Videos

Similar Questions

Explore conceptually related problems

Statement-1: Generally, ionisation enthalpy increases from left to right in a period. Statement-2: When successive electrons are added to the orbitals in the same principal quantum level, the shielding effect of inner core of electrons does not increase very much to compensate for the increased attraction of the electron to the nucleus.

Assertion: Generally, ionisation enthalpy than beryllium. Reason: When successive electrons are added to the orbitals in the same principle quantum level, the shiielding effect of inner core of electrons does not increase very much to compensate for the increased attraction of the electron to the nucleus.

With increase in atomic number, the Electron affinity........from left to right in a period.

Assertion: Boron has a smaller first ionisation enthalpy than beryllium. Reason: The penetration of a 2s electron to the nucleus is more than the 2p electron, hence 2p electorn is more shielded by the inner core of electrons than the 2s electrons.