The formula of the stable binary compound which is formed by the combination of potassium and oxygen is ________.

K_{2} O

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K O

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K O_{2}

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None of these

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Solution

The correct option is C $K_{2} O$
Potassium ion is represented as $K^{+}$ and oxygen ion is represented as $O^{2 -}$ . Alkali metals combine with oxygen to form metal oxide.
Potassium oxide is the compound.
$4 K + O_{2} \to 2 K_{2} O$

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Q. Predict the formulae of the binary compounds formed by combination of the following pairs of elements:
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Question 48
Give the formulae of the stable binary compounds that would be formed by the combination of following pairs of elements.
(a) $Mg and N_{2}$
(b) $Li and O_{2}$
(c) $Al and {Cl}_{2}$
(d) $K and O_{2}$

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The formula of the stable binary compound which is formed by the combination of potassium and oxygen is ________.

The correct option is C K2OPotassium ion is represented as K+ and oxygen ion is represented as O2−. Alkali metals combine with oxygen to form metal oxide. Potassium oxide is the compound. 4K+O2→2K2O

The correct option is C $K_{2} O$
Potassium ion is represented as $K^{+}$ and oxygen ion is represented as $O^{2 -}$ . Alkali metals combine with oxygen to form metal oxide.
Potassium oxide is the compound.
$4 K + O_{2} \to 2 K_{2} O$