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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 of the compound formed in the space provided. element #1 | element #2 | Forms ionic compound? | empirical formula of ionic compound potassium | calcium | yes no | fluorine | magnesium | yes no | chlorine | rubidium | yes no | sulfur | bromine | yes no |

          Decide whether each pair of elements in the table below will form an ionic compound. If they will, write the empirical formula of the compound formed in the space provided.

element #1 | element #2 | Forms ionic compound? | empirical formula of ionic compound
potassium | calcium | yes no | 
fluorine | magnesium | yes no | 
chlorine | rubidium | yes no | 
sulfur | bromine | yes no |
        
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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 of the compound formed in the space provided.

element #1 | element #2 | Forms ionic compound? | empirical formula of ionic compound
potassium | calcium | yes no | 
fluorine | magnesium | yes no | 
chlorine | rubidium | yes no | 
sulfur | bromine | yes no |

Added by Andrea H.

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Chemistry: Structure and Properties
Chemistry: Structure and Properties
Nivaldo Tro 2nd Edition
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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 of the compound formed in the space provided. element #1 | element #2 | Forms ionic compound? | empirical formula of ionic compound --- | --- | --- | --- potassium | calcium | yes / no | fluorine | magnesium | yes / no | chlorine | rubidium | yes / no | sulfur | bromine | yes / no |
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Transcript

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00:01 The question has given four pairs of elements and we are asked if the pair can form ionic compound and if they form ionic compound then what is the empirical formula of that compound.
00:35 So the first pair in the question is bromine and potassium.
00:47 So we know that potassium is a alkali metal and alkali metal are stable in plus one oxidation state so it will form k plus and bromine is halogen and it is a non -metal and it is its stable oxidation state is br minus.
01:19 So one you have cation the other you have anion these two can combine and form an ionic compound called potassium bromide.
01:28 Yes this compound forms ionic compound and the formula for empirical formula for this compound is kbr that is potassium bromide.
01:41 Then the second pair in the question is the first element given is calcium and the second element given is rubidium.
02:01 So if we know that calcium is a alkaline earth metal, alkaline earth metal so the stable oxidation state for alkaline earth metal is 2 plus.
02:21 If you talk about rubidium, rubidium is a alkali metal.
02:32 So just now we have discussed alkali metal are stable in plus one oxidation state since both are cations we cannot form ionic compound so no ionic compound is formed here.
02:56 So no ionic compound means no empirical formula for this combination or for this pair...
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