Question
Asked Jul 7, 2019
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Decide whether each pair of elements in the table below will form an ionic compound. If they will, write the empirical formula and name of the compound formed in the spaces provided.

empirical
formula of ionic
compound
Forms ionic
element #1
element #2
name of ionic compound
compound?
yes
no
potassium
oxygen
yes
no
iodine
oxygen
yes
no
rubidium
chlorine
yes
no
magnesium
potassium
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empirical formula of ionic compound Forms ionic element #1 element #2 name of ionic compound compound? yes no potassium oxygen yes no iodine oxygen yes no rubidium chlorine yes no magnesium potassium

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Expert Answer

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Step 1

Ionic bond is formed by the transfer of electron from an electropositive atom to the electronegative element. The elements having high electronegativity difference between them can form an ionic compound.

Step 2

Potassium and rubidium are s block elements and are highly electropositive in nature. Therefore, they can form an ionic bond with an electronegative species like oxygen and chlorine atoms respectively.

Potassium and oxygen combine together to form an ionic compound having molecular formula K2O. The name of this ionic compound is potassium oxide.

Rubidium and chlorine combine together to form an ionic compound having molecular formula RbCl. The name of this ionic compound is rubidium chloride.

Step 3

Oxygen and iodine both belong to the p block elements which are electronegative in nature. Therefore, they are unable to form a bond by the transfer of electrons. Therefore, they will not form ...

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