Question

The table below provides some information about an unidentified element. Based on this information, the unidentified element is best classified as which of the following?
A) a metal in group 1
B) a metal in group 14
C) a nonmetal in period 4
D) a metalloid in period 5

Answer 1

In the physical properties, it is mentioned that the element has 4 valence electrons. The elements in the periodic table are arranged such that, the number of valence electrons present in the neutral atoms belonging to a particular group  is equal to the group number.

Thus, the unidentified element can be best classified as a nonmetal in period 4

Ans C)