what is the same about the electron structures of:
a. Lithium, Sodium and Potassium.
b. Beryllium, Magnesium and Calcium.
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Answer:
i) Lithium, sodium and potassium all have one electron in outermost shell. ii) Beryllium, magnesium and calcium all have two electrons in outermost shell.
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a. they all have same valence electron
b. they have same valence electron
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