Which statement( s) is arefalse for theperiodicclassificationof elemen

1.	Which statement( s) is arefalse for theperiodicclassificationof element ?
Answer» Theproperties of the element are theperioicfunctions of thetheiratomic number . Non- metallicelement areleasser innumberthan thtemetallicelements the firstionization energiesof the elementsalong a perioddo not varyina regularmannerwith increasein ATOMIC number Fortransitionelements the d- elementsarefilledmonotonically WITHINCREASE inatomicnumber Solution :In v (Z =23) , Itis `d^(3) , ` Cr (z=24) it is `d^(7)` inNi(Z= 28 ) , it is `d^(8)` , in Cu (Z=29)it is`d^(10)` andin Zn (Z= 30)it isalso `d^(10)`. Thusd- electrons are notfilledmonotonically.Thusoption(d ) iswrong . Option( c) isalsowrongbecause`Delta_(i)H_(1)` OFTHE elementsin aperiodvaryregularly .

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