Question

an atom of an element contains 35 electrons and 45 neutrons deduce the number of protons and electronic configuration and all the four Quantum numbers for last electron

Answer 1

Numbers of the Electrons in an atom = 35 electrons.
Numbers of the Neutrons in an atoms = 45 neutrons.

 We know the numbers of the Electrons is always equals to the numbers of the Protons. 
(i)∴ Numbers of the Protons in an atom = 35.

(ii) Electronic Configuration of the Element is ⇒
By Bohr's bury method, 
E.C.