Question

Which statements are correct about a group? The elements in each group have similar chemical properties. The elements in each group have identical physical properties. The atomic number of each element increase by 7 down through the group. Each member of the group has the same number of electrons in the outer shell.

Answer 1

In Chemistry, when we say Group, this term refers to the column in the periodic table wherein the elements in it share the same valence electron structure, as well as their physical and chemical properties. Therefore, based on the statements above, I can say that the answer would be the first option. 

Answer 2

Answer: A and D hope this helps