Question

An element 'M' has atomic number 11.(a) Write its electronic configuration.(b) State the group to which 'M' belongs.(c) Is 'M' a metal or a non-metal.(d) Write the formula of its chloride.

Answer 1

1)e.c=2,8,1
2) na belongs to the 1st group
3)yes it is a metal
4)na+cl2=nacl

Answer 2

M atomic number = 11 (compound is sodium Na)
a) 2, 8, 1
b) 1st group
c) it is a metal
d) Na + Cl ----> NaCl