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Statement-1: Generally, ionisation entha...

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.

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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.

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.

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.

Statement 1: Metallic character decreases from left to right. Statement 2: Ionization enthalpy increase and electronegativity decreases.

Statement-1: Boron has a smaller first ionisation enthalpy than beryllium. Statement-2: The penetration of a 2s electron to the nucleus is more than the 2p electron hence 2p electron is more shielded by the inner core of electrons than the 2s electrons.

Statement-1 : First electron gain enthalpy is alway -ve for an element. Statement-2 : Magnitude of electron gain enthalpy irregularly increases from left to right in a period.

Statement-1 : First electron gain enthalpy is alway -ve for an element. Statement-2 : Magnitude of electron gain enthalpy irregularly increases from left to right in a period.