Which element below would have similar properties to Barium (Ba)? (Remember that elements in the same group have the same number of valence electrons, so their properties are similar.)

Question

a. Cesium (Cs)

b. Francium (Fr)

c. Beryllium (Be)

d. Hafnium (Hf)

choose the correct answer

Answer 1

Barium (Ba) is an alkaline earth metal located in Group 2 of the periodic table. Elements in the same group have similar properties due to having the same number of valence electrons.

Looking at the options:

a. Cesium (Cs) - Group 1 (alkali metal) b. Francium (Fr) - Group 1 (alkali metal) c. Beryllium (Be) - Group 2 (alkaline earth metal) d. Hafnium (Hf) - Group 4 (transition metal)

The correct answer is c. Beryllium (Be), as it is also in Group 2 and shares similar properties as Barium.