Question

The innermost electron shell of an atom can hold up to _____ electrons.

Answer 1

The innermost electron shell of an atom can hold up to two electrons.

Step-by-step explanation:

The innermost electron shell of an atom, also known as the first shell or K-shell, can indeed hold a maximum of 2 electrons. This is often based on the quantum mechanical model of the atom, where the electrons are organized into various shells and subshells.

In addition to this, the first shell consists of only one subshell, called the 1s subshell, which accommodates a maximum of 2 electrons. The distribution of electrons in shells and subshells is a fundamental aspect of atomic structure and determines the chemical properties of elements, as well as their interactions in chemical reactions and bonding.

Answer 2

• The innermost electron shell of an atom can hold up to 2 electrons.

Step-by-step explanation:

The innermost electron shell is the lowest principal energy level, i.e n = 1.

For n = 1 there is only one orbital, the 1s orbital.

As stated by the Pauli's exculsion principle an orbital may have a maximum of two electrons, and they have opposed spins.

Then, the innermost electron shell has just one orbital and, in consequence, can hold up to 2 elecrons.