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Lewis diagram for SeBr3-
Accepted Answer
The Lewis diagram for SeBr3- shows selenium (Se) as the central atom with three bromine (Br) atoms bonded to it. Selenium has six valence electrons, and each bromine has seven. The negative charge indicates an extra electron. Here's how to draw it:
1. Central Atom: Place Se in the center.
2. Bonding Electrons: Connect each Br atom to Se with a single bond (one shared pair of electrons). This uses 6 of Se's valence electrons.
3. Lone Pairs: Se has two remaining valence electrons, which form a lone pair on the Se atom.
4. Formal Charge: Since we added an extra electron, Se has a formal charge of -1.
The final structure:
Br
|
:Br-Se-Br:
|
Br
The structure is trigonal pyramidal, with the lone pair on Se pushing the Br atoms slightly downward.
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