ISOLATION OF ELEMENTS - L7

ORGANIC L7

PHYSICAL CHEMISTRY L7

Solid State L7

Organic Chemistry L7

Questions based on L5-L7

Questions based on L7 and L8

The wavelength of L_alpha line in X-ray spectrum of ._76Pt is 1.32Å. The wavelength of L_alpha line in X-ray spectrum of another unknown element is 4.17Å. If screening constant for L_alpha line is 7.4, then atomic number of the unknown element is

The properties of the following elements were predicted by Mendeleeff before their isolation are

The hybridization in IC l_7 is

An element has Z = 7 . What is the valency of the element ? Also name the element.