hi
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.
The electron arrangement for calcium is 2,8,8,2. This means that calcium has 20 electrons arranged in four energy levels, with 2 electrons in the first energy level, 8 electrons in the second and third energy levels, and 2 electrons in the fourth energy level.
An atom's energy levels are occupied by electrons. Electrons occupy the energy levels, or electron shells, in order of increasing energy. The lowest energy level is filled first before electrons move to higher energy levels.
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.
The highest occupies energy level in aluminum is the 3rd energy level. Its electron configuration is 1s22s22p63s23p1.
An electron in the outermost energy level of an atom is called a valence electron.(We refer here to the outermost occupied levels of an atom. There are, of course, many other higher energy levels normally available that are not occupied.)These electrons determine the chemical reactivity of the atom.the valence electrons
4 energy levels with 2, 8, 8, 2 electrons in the energy levels.
two, i think recommend you check this answer not entirely sure
In an aluminum atom, there are three electron energy levels that are occupied: 1s, 2s, and 2p. The 1s level can hold up to 2 electrons, and the 2s and 2p levels can each hold up to 6 electrons, for a total of 14 electrons in the aluminum atom.
The region around the nucleus of an atom occupied by electrons is called the electron cloud or electron shell. This is where electrons are most likely to be found based on their energy levels or orbitals.
Lithium and sodium are alkaline metals that have 3 occupied energy levels.
4 since it is in period 4 of the Periodic Table of Elements