Question

The number of pairs of electrons around I in IF3, IF5 and IF7 respectively are a) 5,6 and 7 b) 5,7 and 6 c) 7,5 and 6 d) 7,6 and 5

Answer 1

Answer:

I think in IF3 its 5IF5 its 6 nd IF7 its 7lone pair for IF3 is 2 for IF5 is 1 and IF7 is 0 and bond pair for IF3 is 3 for IF5 is 5 and for IF7 is 7

Answer 2

Answer:

The number of pairs of electrons around I in $IF_3$ , $IF_5$ , and $IF_7$  respectively are $5\ ,\ 6\ ,$ and $7$·

Therefore, the answer is option A·

Explanation:

The three compounds that are given as,

$IF_3\ \ :$  Iodine trifluoride

$IF_5\ \ :$  Iodine pentafluoride

$IF_7\ \ :$  Iodine heptafluoride

These compounds are known as inter-halogen compounds where the two halogen groups are combining to give the compound· In all these compounds, iodine is the central atom·

We know that iodine belongs to the seventeenth group and has a valency of seven· These seven electrons combined with one electron from the other atom accordingly forms the compounds

• In Iodine trifluoride, $IF_3$ the number of fluorine atoms is three· The central iodine atom from its one electron and one electron from the fluorine atom form the I-F bond· Since there is three fluorine atom it forms three I-F bonds· So it has three bond pairs and two lone pairs of electrons·

        Totally five pairs of electrons around the I in  $IF_3$·

• In Iodine pentafluoride, $IF_5$  the number of fluorine atoms is five· The central iodine group from its one electron and one electron from the fluorine atom form the I-F bond· Since there is five fluorine atom it forms five I-F bonds· So it has five bond pairs and one lone pair of electrons·

        Totally six pairs of electrons around the I in  $IF_5$·

• In Iodine heptafluoride, $IF_7$ the number of fluorine atoms is seven· The central iodine group from its one electron and one electron from the fluorine atom form the I-F bond· Since there is seven fluorine atom it forms seven I-F bonds· So it has seven bond pairs and zero lone pairs of electrons·

       Totally seven pairs of electrons around the I in  $IF_7$·

Therefore,

The number of pairs of electrons around I in $IF_3$ , $IF_5$ , and $IF_7$  respectively are $5\ ,\ 6\ ,$ and $7$·