7. The element 'X' of atomic number 16 forms basic oxide. The number of electrons in X2-ion will be (a) 16 (b) 14 (c) 12 (d) 18
Answers
Answered by
3
As in it the element x is gaining 2 electrons the no of electrons in it changes from 16 to 18.
Answered by
58
Answer:
d) 18
Explanation:
The element 'X' of atomic number 16 forms oxide. As the atomic number of the element is 16 means the element is Sulphur. Because it's atomic number is 16 having electronic configuration 2, 8, 6 in K, L and M shell.
It belongs to 3rd period and 16th group of the periodic table and comes under p-block.
It will gain two electrons to form an anion and hence there are 18 electrons in it.
Therefore, the correct answer is option d) 18
Similar questions