Question

An element X has atomic number 9 and Y has atomic number 17.
1) In which period each will be placed?
2) Would they be chemically smaller similar? Explain.​

Answer 1

Answer:

1) X will be placed in period 2

Y will be placed in period 3.

2) Yes they would be chemically similar as they are placed in same group and elements placed under same group have similar chemical propertied