The statement that is not correct for modern classification of element is(1)The properties of elements are periodic function ofthese aromic numbers. (2)The ionisation enthalphyof the elements generally increase with increase in atomic number . (3) For transition elemens the 3d orbitals are filled after 3p-orbitals and befire 4sorbitals . (4)Fifth period contain 18 elements

The statement that is not correct for modern classification of element

1.	The statement that is not correct for modern classification of element is(1)The properties of elements are periodic function ofthese aromic numbers. (2)The ionisation enthalphyof the elements generally increase with increase in atomic number . (3) For transition elemens the 3d orbitals are filled after 3p-orbitals and befire 4sorbitals . (4)Fifth period contain 18 elements
Answer» 1 and 2 2 and 3 4 only 3 only Answer :d