Assertion (A) : Boronhas smallerfirstionisation enthalpy than beryllium Reason( R ) :The penetrationof a 2s electron to thenucleusis more than the2pelectronhence 2p- electronis moreshieldedby the innercore ofelectrons than 2selectrons .

Assertion (A) : Boronhas smallerfirstionisation enthalpy than berylliu

1.	Assertion (A) : Boronhas smallerfirstionisation enthalpy than beryllium Reason( R ) :The penetrationof a 2s electron to thenucleusis more than the2pelectronhence 2p- electronis moreshieldedby the innercore ofelectrons than 2selectrons .
Answer» ASSERTION andreasonboth arecorrectstatementbut REASONIS notcorrectexplanation for assertion Assertion is correctstatementbut reasonis wrongstatement. Assertion ANDREASON BOTHARE correctstatementand reasonis correctexplanationfor assertion Assertion isreasonboth arewrongstatements. Solution :NA