what is the molecular shape of OCCl2 ion? C is the central atom.
Options:
1. seesaw
2. tetrahedral
3. trigonal pyramidal
4. trigonal planar
5. trigonal bypyramidal
6. octahedral
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trigonal
You need to draw the Lewis electron dot structure. Look at the regions of high electron density. I see three with no unpaired electrons on the central atom; therefore, I would go with trigonal planar.
lineaire
To determine the molecular shape of the OCCl2 ion, you need to follow a few steps:
1. Count the total number of valence electrons for the molecule or ion. For OCCl2, you have:
Oxygen (O) = 6 valence electrons
Chlorine (Cl) = 7 valence electrons * 2 = 14 valence electrons
Total = 6 + 14 = 20 valence electrons
2. Find the central atom, which is carbon (C) in this case.
3. Use the remaining valence electrons to form bonds between the central atom and the surrounding atoms. In this case, there are two chlorine atoms, so two bonds will be formed between carbon and each chlorine atom.
4 valence electrons will be used for each chlorine-carbon bond, leaving 12 valence electrons remaining.
4. Distribute the remaining electrons around the peripheral atoms (oxygen and chlorine) in order to achieve an octet (or duet for hydrogen).
Oxygen (O) needs 6 electrons to complete its octet, so it will have 6 lone pairs around it. This accounts for 12 valence electrons.
5. Determine the molecular shape based on the electron pair arrangement. In this case, the electron pair arrangement is tetrahedral because carbon has four regions of electron density - two bonding pairs and two lone pairs.
6. However, you also need to consider the molecular geometry, taking into account the presence of lone pairs. The presence of lone pairs can distort the molecular shape.
In this case, the presence of two lone pairs on the central carbon atom causes the molecular geometry to deviate from the ideal tetrahedral arrangement. The lone pairs exert a greater repulsion force than the bonding pairs, causing the molecule to take on a different shape.
7. The correct molecular shape for OCCl2 with carbon as the central atom is therefore "trigonal pyramidal."
So, the correct answer is:
3. trigonal pyramidal