An element of atomic weight 40 has 2, 8, 8, 2 as the electronic configuration. Which one of the following statements regarding this element is not correct
(a) it belongs to II group of the periodic table
(b) it has 20 neutrons
(c) the formula of its oxide is MO₂
(d) it belongs to 4th period of the periodic table
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option c is incorrect
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Option (c) is incorrect, as the element is calcium and
Calcium oxide is CaO
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