Question

The electronic configuration of an element 'X' is 2, 8, 18, 3.

(i) What is its atomic number?

(ii) Are the properties of element 'X' similar to that of element N or F

(iii) Write the period to which 'May belong in the periodic table.

(iv) Write the group number of 'X'.​

Answer 1

Answer

a) X=2 b)Y=2,6 c)Z=2,8,2

1s

2

1s

2

2s

2

2p

4

1s

2

2s

2

2p

6

3s

2

.

i) 'Y' belongs to the 2nd period. Because its electronic configuration ends with n=2

ii) 'Z' belongs to the 2nd group as its last electron enters into the second group of s-subshell.

iii)'X' belongs to 18th group.