(a) What are the atomic numbers of elements whose outermost electronic configurations are given by
(i) 3s1
(ii) 3p5 ?
(b) Which of the following are isoelectronic species?
Na+, K+, Mg2+,Ca2+, S2-,Ar
(c) What will be the wavelength of a ball of mass 0.1kg moving with a velocity of 10 ms-1 ?