Question

The metals of group 2 from top to bottom are Be,Mg,Ca,Sr and Ba
1)which one these elements will for ions most readily and why????
2)State the common feature in their electronic configuration.

Answer 1

beryllium barium calcium ,Sr
sr because atomic size increases
they have same valency

Answer 2

1 ) Barium will form ions most readily because Barium, whose chemical symbol is Ba, is one of the alkaline metals and we know that the chemical reactivity of metals increases as we move from top to bottom in a group.

Note: Chemical reactivity is the tendency to of elements to form ions by gaining or losing the electrons from their valence or penultimate shell or energy level.

2. All of them have same number of valence electrons as well as same valency.

Note: Valency is defined as the combining capacity of any element.