5. An element 'X' has 8 electrons in the
M shell when it gains one electron. Which
statements given below are not correct
about the element X'?
(a) It belongs to 3rd period in the
modern periodic table
(b) It has a valency of 7
(c)
It belongs to 18th group in the
modern periodic table
(d) Its valency is 1
Answers
Answered by
2
Answer:
(d) is correct answer thanks for free point
Answered by
3
Answer:
(b) is incorrect
Explanation:
(b)it has valency 7 is incorrect
Similar questions