SCIENCE
PHYSICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the lowest occupied energy level of an atom
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the highest occupied energy level of an atom
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the electron with the most energy in the atom
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the electron with the least energy in the atom
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Detailed explanation-1: -Valence electrons are the electrons in the highest occupied principal energy level of an atom. In the second period elements, the two electrons in the 1s sublevel are called inner-shell electrons and are not involved directly in the element’s reactivity, or in the formation of compounds.
Detailed explanation-2: -The highest energy band occupied by electrons is the valence band.
Detailed explanation-3: -Electrons in the outermost energy level of an atom are called valence electrons.
Detailed explanation-4: -For B, beryllium, beryllium has three Helium has two electrons. One S. Two, that’s the highest occupied energy level.
Detailed explanation-5: -Valence electrons are the outermost electrons and are therefore at the highest energy level. Because they are the outermost energy levels, they are available to participate in chemical bonding, either ionic or covalent. The alkali metals have one valence electron in their highest energy level.