Question

1 point
15. An element Y' has 1 electrons in its M shell. What is true about the element 'X' ?
5) It belongs to 3 period of modern periodic table
II) Its atom contains protons !!
IID It has a valency of 7
IV) Its atoms can loose one electron to acquire noble gas configuration
DI and II
2) Il and
3) I, II, IV
4) II, IV. I. III
O
1
2
ООО
4
1 point​

Answer 1

Explanation:

. An element Y' has 1 electrons in its M shell. What is true about the element 'X' 3rd option is right