A calcium atom has 20 electrons arranged in four energy levels or rings around the nucleus.
The energy levels of an atom hold electrons.
Calcium oxide (CaO) contain one atom of calcium.
Argon does not contain valence electrons.
An atom has multiple energy levels. When an atom has more electrons than it can fit into an energy level, then it puts them into the next higher energy level.
In a neutral atom of calcium, there are 4 energy levels that are partially or fully occupied. Calcium has 20 electrons, distributed among the 4 energy levels with 2, 8, 8, and 2 electrons in each energy level, respectively.
An atom of calcium in the Bohr model has four energy levels. These energy levels are designated by the quantum numbers n=1, 2, 3, and 4, corresponding to the first, second, third, and fourth energy levels, respectively.
A calcium atom has 20 electrons arranged in four energy levels or rings around the nucleus.
An atom's energy levels are orbitals which can contain 2 electrons each, assuming that they are traveling in opposite directions from each other.
The energy levels in an atom determine the possible locations of electrons, known as orbitals. Each energy level can contain a specific number of orbitals, and electrons fill these orbitals based on their energy levels.
A calcium atom has 4 energy levels. The first energy level can hold up to 2 electrons, the second can hold up to 8 electrons, the third up to 8 electrons, and the fourth up to 2 electrons based on the electronic configuration of calcium, which is 2-8-8-2.
Electrons located in the innermost energy levels (such as the 1s level) have the lowest energy. These energy levels are closest to the nucleus and are filled first in an atom according to the aufbau principle.
A neutral atom of calcium has five energy levels that are partially or fully occupied. These energy levels are filled with electrons according to the Aufbau principle, with the first two levels (K and L) being fully filled while the remaining three levels (M, N, and O) are partially filled.
4 since it is in period 4 of the Periodic Table of Elements
The energy levels of an atom hold electrons.
Calcium oxide (CaO) contain one atom of calcium.
two, i think recommend you check this answer not entirely sure