Why elements are sometimes called the "s" block?

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Group I and Group II elements of the periodic table are referred to as the "s" block because their outermost electrons occupy the s orbital. This classification includes alkali metals and alkaline earth metals, which have distinct chemical properties due to their electron configurations. The term "s block" reflects the shape of the electron cloud associated with these orbitals. Understanding this classification helps in predicting the behavior of these elements in chemical reactions. The discussion highlights the importance of electron configuration in defining the properties of elements.
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Okay guys need to know why The Group I and Group II elements of the periodic table are sometimes called the "s" block?

Sorry for the vaigness of the question this is what they gave me.

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Ok thanks. just read the sticky sorry guys won't happen again.
 
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