Answer
a. V period 5, group V B, metal
b. Rb period 5, group I A, metal
c. B period 2, group III A, metalloid
d. I period 5, group VII A, non metal
e. He period 1, group VIII A, non metal
Work Step by Step
Strategy to work in Period table of the elements:
periods' numbers are given in the far left of the table (horizontal rows of the table)
Group numbers are given in the top of the table (vertical rows of the table)
The "staircase" that starts at group III A and ends at VII A, divides metals from nonmetals. The elements on the left are metals, those on the right are non metals, while the elements next to the "staircase" are metalloid.
Applying these rules we found that:
a. V is on period 5, group V B, and it is metal like all elements of groups B
b. Rb is on period 5, group I A, and it is metal
c. B is on period 2, group III A, and it is metalloid as it is close to "the staircase" that divides metals from non metals
d. I is on period 5, group VII A, non metal as it is on the right of the staircase that divides metals from non metals
e. He is on period 1, group VIII A, non metal as it is on the right of the staircase that divides metals from non metals
