Question

properties of the elements are given below. Where would you locate the following elements in the
periodic table?
1) An element which is an inert gas with two valence electrons.
2) An element with variable valency stored under water.
c. An element A belongs to group 2 and an element B belongs to group 17. Write the electron dot structure
of formula between A and B.​

Answer 1

Answer:

1 helium

2 phosphorus

3