What is the Lewis structure for SeF₂?

Answer 1

The entire formula has 26 valance electrons or 13 electron pairs. (As has 5, and F has 7). Now determine which is your central atom, this is As because there is only one. Now put F's around the As and form a single bond to each. This gets rid of three of the pairs, 10 more to go. Because you have to follow the octect rule in most situations, you now place three non-bonding electrons to each of the F's, and attach one non bonding pair to the As. Count the pairs, there should now be 13 pairs total (26 individual) General idea is F-As-F (with one more F single bond off the As and pairs around the F's and As)----> F Hope this helps (actually I hope its right myself, I'm trying to do my homework now too). :-)

Answer 2

Se is in the middle it has F around all four sides with single bonds connecting it and the F has 6 dots around it 2 on each side that is not connecting it to the Se and the Se has 2 dots on it too. Hope this helps.

Answer 3

Simply put, Selenium (Se) is the central atom with four Flourines (F) around the atom. There is four single bonds that connects the Flourines to the Selenium atom. However, since the SeF4 is one of those compounds that is unsatisfied by the Octet rule, a lone pair of electrons should be placed on the Selenium atom.

Answer 4

..

.. :F: ..

:F - Se - F:

.. .. .. ..

There are three Florine atoms and two lone pairs attached to the central Selenium atom.

Answer 5

Se has the lowest EN (electronegativity) so it is in the middle. There are a total of 26 electrons (Se: 6, O: 6, F_2: 14).

Answer 6

F

|

O-Se

|

F

I'm almost positive this is correct.

Answer 7

The Lewis Structure is bent.

Answer 8

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