Q.

Statement 1 : Generally, ionisation enthalpy increases from left to right in a period in Modern periodic table.

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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a

 Statement 1 is false and Statement 2 is true.

b

 Statement 1 is true and Statement 2 is false.

c

Both Statement 1 and Statement 2 are true .

d

Both Statement 1 and Statement 2 are false.

answer is A.

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Statement 1 : Generally, ionisation enthalpy increases from left to right in a period in Modern periodic table.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.