Answer the following in one line or two:
(a) what is the maximum number of electrons that can be accomodated in the outermost energy shell in an atom?
(b) on the basis of thomoson's model of an atom explain how an atom is neutral as a whole
(c ) how many neutons are present in hydorgen atom?
(d) do isobars belongs to the same elements?
e ) An element has five electons in the M shell which is the outermost shell. write its electronic configureation.

Explanation

(a) The outermost energy shell in an atom can have a maximum of eight electrons
(b) According to Thomson's model of an atoms all the protons in an atom are present in the positively charged sphere while negatively charged elctrons are studded in this sphere .Since the electrons and protons are equal in number each carrying one unit charge the atom as a whole is electrically neutral
(c ) Hydrogen atom has no neutron
(d) No isolars belongs to different elements since they differ in their atomic number
(e ) The electronic configuration of the element is K(2)L(8) M(5).