Question

draw a neat lablled diagram (1)diagramatic schetch of electronic configuration of magnesium (atomic no 12)

Answer 1

2 in k shell 8 in l shell 2 in m shell

Answer 2

Answer:

J.J. ... Thomson proposed the plum pudding model of the atom, which had negatively-charged electrons embedded within a positively-charged soup.

Rutherford's gold foil experiment showed that the atom is mostly empty space with a tiny, dense, positively-charged nucleus.