Question

1. identify the period and group numbers of the element with the electron - configuration ne3s²3p⁴. period 2, group 4 period 3, group 4 period 3, group 16 period 2, group 16 clear all

Explanation:

Step1: Determine the period

The highest - energy level in the electron configuration is the period number. Here, the highest energy level is 3 (from $3s^23p^4$), so the period is 3.

Step2: Determine the group

For main - group elements, the number of valence electrons determines the group number. The electron configuration $[Ne]3s^{2}3p^{4}$ has 6 valence electrons ($2 + 4$ from $3s$ and $3p$). In the main - group numbering system, elements with 6 valence electrons are in group 16.

Answer:

Period 3, Group 16