Examlex
According to ________, no two electrons in an atom can have the same four quantum numbers.
Energy-efficient
Using less energy to perform the same task or produce the same result, often associated with environmental sustainability.
Environmentally Friendly
Practices or products that do not harm the environment.
Alternative
A choice or option that is available as a substitute to the main choice.
Substitute
A substitute is an alternative or replacement for someone or something that fulfills a similar function or role.
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