Question

Part of the Periodictable is given (symbols are not real)
18
2.
13 14 15
14 15 16 17
A
E
3
4 5 6 7 8 9 10 11 12
F
B
C
D
a. Which are the s block elements?
b. Which may form coloured compounds ?
c. Which is the least reactive metal in group 1?
d. Find the element with only 1 electron in 4s subshell ?​

Answer 1

Answer:

only 1 electron in 4s subshe