The atomic number of calcium (Ca) is 20, which means it has 20 electrons in its neutral state.

The electron configuration of calcium is 1s² 2s² 2p⁶ 3s² 3p⁶ 4s².

The inner electrons, also known as core electrons, are those in the energy levels below the outermost, or valence, level.

In the case of calcium, the inner electrons are those in the 1s, 2s, 2p, 3s, and 3p orbitals.

Counting these up, we have 2 (from 1s²) + 2 (from 2s²) + 6 (from 2p⁶) + 2 (from 3s²) + 6 (from 3p⁶) = 18 inner electrons.

So, a calcium atom has 18 inner electrons.

Question

The atomic number of calcium (Ca) is 20, which means it has 20 electrons in its neutral state.

The electron configuration of calcium is 1s² 2s² 2p⁶ 3s² 3p⁶ 4s².

The inner electrons, also known as core electrons, are those in the energy levels below the outermost, or valence, level.

In the case of calcium, the inner electrons are those in the 1s, 2s, 2p, 3s, and 3p orbitals.

Counting these up, we have 2 (from 1s²) + 2 (from 2s²) + 6 (from 2p⁶) + 2 (from 3s²) + 6 (from 3p⁶) = 18 inner electrons.

So, a calcium atom has 18 inner electrons.

Knowee AI · Accepted Answer

The atomic number of calcium (Ca) is 20, which means it has 20 electrons in its neutral state.

The electron configuration of calcium is 1s² 2s² 2p⁶ 3s² 3p⁶ 4s².

The inner electrons, also known as core electrons, are those in the energy levels below the outermost, or valence, level.

In the case of calcium, the inner electrons are those in the 1s, 2s, 2p, 3s, and 3p orbitals.

Counting these up, we have 2 (from 1s²) + 2 (from 2s²) + 6 (from 2p⁶) + 2 (from 3s²) + 6 (from 3p⁶) = 18 inner electrons.

So, a calcium atom has 18 inner electrons.

How many inner electrons are present in Ca atom?