A 0.66 kg ball is moving with a speed of 100 m/s. The associated wavelength will be

(h = 6.6 $$ \times $$ 10^$$-$$34 J s)

Among the following which one has the highest cation to anion size ratio ?

Among the elements Ca, Mg, P and Cl, the order of increasing atomic radii is

In which of the following molecules the central atom does not have sp³ hybridization?