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Ions which have the same electronic configuration are those of:
(1) Lithium and sodium
(2) Sodium and potassium
(3) Potassium and calcium
(4) Oxygen and chlorine
Ans: Potassium and calcium
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The type of orbitals present in Fe is : (1) s (2) s and p (3) s, p and d ()s, p, d, and f Ans: s, p and d
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There are thirty (30) electrons in benzene. This contains 24 carbon electrons and 6 hydrogen electrons. There are 12 electrons shared among C and H, and 18 among C and C. (6 electr
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predict the period number and group number of element with atomic number 12
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