Which one of the following is a correct electronic configuration of sodium.
2,8
8,2,1
2,1,8
2,8,1
Only certain special orbits known as discrete orbits of electrons, are allowed inside the atom was proposed by
Rutherford
Neils Bohr
John Dalton
Joseph Priestley
The model of an atom to be similar to that of a Christmas pudding was proposed by
Thomson
Goldstein
Chadwick
An atom contains 14 protons and 14 neutrons, its atomic number is
14
28
20
15
Most of the fast moving α-particles passed straight through the gold foil was proposed by
J.J Thomson
An atom consists of a positively charged sphere and the electrons are embedded in it was proposed by
An atom contains 17 protons and 18 neutrons, the atomic number of that atom is
17
18
1
35
Maximum number of electrons that can be accommodated in the L shell is
2
8
36
The valency of the atoms of elements having a completely filled outermost shell is
4
0
3
Maximum number of electrons that can be accommodated in the k shell is
16
