Which of the following pairs of elements have same
number of valence electrons?
(1) Sodium and magnesium
(2) Carbon and nitrogen
(3) Oxygen and sulphur
(4) Potassium and calcium
Answers
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6
(3) oxygen and sulphur .....
they have 6 valence electron which means that they have 2 valency
they have 6 valence electron which means that they have 2 valency
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3
Answer:
Oxygen and Sulfur has same number of valance electrons in their outer most shell.
Explanation:
Oxygen and Sulfur has 6 electrons each in their out most shell. A valance electron is the outer shell electron that revolves around an atom. The count of valance electron might differ up on various elements in the periodic table. The valance electron is the most responsible electron during the formation of chemical bonds with other elements and balancing the atom.
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