What is the word for the definition of an electron in the highest occupied energy level of an atom

The word for the definition of an electron in the highest occupied energy level of an atom is " valence electron".

Explanation:

A valence electron is an external shell electron associated with an atom in chemistry and physics that can participate in the creation of a chemical bond if the highest occupied energy level of an atom is not closed. All atoms in a single covalent bond add one valence electron to form a mutual pair.

The periodic table showcases the arrangement of valence electrons group and block wise like:

Alkali metals have n s 1 as external shell configuration like H, Li, Na, K etc.Alkaline metals have n s 2 as external hell configuration like Be, Mg, Ca etc.p-block comprises group 13 to 18 having general electronic configuration n s 2, n p 1–6.d-block or transition metals have general electronic configuration (n-1) d 1–10, n s 1–2.f-block or inner transition metals have general electronic configuration (n-2) f^1–14 (n-1) d^0-1 n s^2.

Why the rest of the question?

The horse latitudes-high-pressure zones about 30 degrees north and 30 degrees south of the equator.-warm air traveling away from the equator cools and sinks-weather tends to be clear and drythe doldrums-low-pressure near equator-air rises and spreads out toward the poles-rising moist air produces clouds and heavy rainthe westerlies-blow from the west-move from the horse latitudes toward the poles.-bring storms across much of the united statesthe tradewinds-blow from the east-move from the horse latitudes toward the equator  -strong, steady winds