Question

when looking across the periodic table from left to right, which of these groups are the first to contain nonmetals? group 2 group 7 group 14 group 18

Explanation:

• Group 2: Alkali earth metals, all are metals.
• Group 7: Halogens, but not the first group with non - metals.
• Group 14: Starts with carbon (non - metal). Moving left to right in the periodic table, group 14 is the first group that contains non - metals. Carbon is a non - metal in group 14.
• Group 18: Noble gases (non - metals), but they are to the right of group 14.

Answer:

group 14