Question

Electrons are found in energy levels around the nucleus of an atom. Energy levels can also be called ""shells."" The energy levels are designated by a principal quantum number (n). The lowest energy level is designated as n=1 whereas the highest energy level is n=7. Which energy level is the closest to the nucleus?

Answer 1

The lowest energy level is n=1 and the highest is n=7. The closest energy level to the nucleus is n=1, which is the first shell. The closest energy level to the nucleus is the first shell (n=1).

Step-by-step explanation:

Electrons in an atom are arranged in energy levels or shells around the nucleus.

The energy levels are labeled with a principal quantum number, denoted as n.

The lowest energy level is n=1 and the highest is n=7.

The closest energy level to the nucleus is n=1, which is the first shell.

Answer 2

The first electronic shell or energy level, having n= 1, called the K shell, is the closest to the nucleus.

Step-by-step explanation:

In an atom, the sub atomic particles called electrons, revolve around the nucleus of the given atom at different energy levels, called shells.

The energy levels or the electronic shells are denoted by the principal quantum number (n) and has the following values n = 1, 2, 3, 4, 5, 6, 7; from the innermost shell to the outermost.

The electron shells are also labelled by the alphabets, K, L, M, N, O, P, and Q, from the innermost shell to the outermost.

Thus the first electronic shell having n= 1, called K shell, is the lowest energy level and is present closest to the nucleus.

Whereas, the last electronic shell having n =7, called Q shell, is the highest energy level and is farthest from the nucleus.