Assertion (A) , Generallyionisationenthalpy increases from left to right in aperiod. Reason( R ): Whensuccessive electrons are addedto the orbitals in thesameprincipalquantum leveltheshielding effectof innercore ofelectrons does notincrease verymuch tocompensate fore theincreased attraction of theelectron of thenucleus.

Assertion (A) , Generallyionisationenthalpy increases from left to rig

1.	Assertion (A) , Generallyionisationenthalpy increases from left to right in aperiod. Reason( R ): Whensuccessive electrons are addedto the orbitals in thesameprincipalquantum leveltheshielding effectof innercore ofelectrons does notincrease verymuch tocompensate fore theincreased attraction of theelectron of thenucleus.
Answer» ASSERTION is correctstatementand reason is wrongstatement. Assertionandreson both arecorrect STATEMENT ANDREASON is CORRECTEXPLANATION of assertion Assertionand reasonboth arewrongstatement . Assertionis wrongstatementand reasoniscorrect statement. Solution :NA