Among the given electronic congigurations, the most stable electronic configuration is 1s²,2s²,2p⁶,3s² Hence, Option (A) is correct option.
What is Stable Elctronic Configuration ?
Their valence shell is complete.
They have two or eight electrons in their valence shell.
They do not gain, lose or share electrons.
Therefore, 1s²,2s²,2p⁶,3s² is the most stable electronic configuration. Hence, Option (A) is correct option.
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