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What is the molecular geometry and electron arrangement around a atom in a molecule or ion which is surrounded by zero lone pairs of electrons and four single bonds...

Question

What is the molecular geometry and electron arrangement around a atom in a molecule or ion which is surrounded by zero lone pairs of electrons and four single bondsA) Tetrahedral and tetrahedralB) trigonal pyramidal and tetrahedralC) trigonal planar and trigonal pyramidalD) Bent and tetrahedralTetrahedral and linear

What is the molecular geometry and electron arrangement around a atom in a molecule or ion which is surrounded by zero lone pairs of electrons and four single bonds A) Tetrahedral and tetrahedral B) trigonal pyramidal and tetrahedral C) trigonal planar and trigonal pyramidal D) Bent and tetrahedral Tetrahedral and linear



Answers

What is the molecular geometry in the structure A? (A) Tetrahedral (B) Trigonal Planar (C) Trigonal Pyramidal (D) Octahedral

There were told that assuming we have three atoms per molecule, we want to know which of the following geometries are not being electron geometries. So we're looking at electron groups around the central. So we have three of them. We've got Tetra Hydro, which has an electron geometry with four groups are too he'd roll six electron groups and tribunal plainer free electron groups. Our 1st 1 we've got Tetra vigils. So normally we would have something in the centre bonded to four other things, meaning we definitely would not have a linear molecule with there have bonds around the centrifugal molecule because we have four things. The bond angles there about 109 degrees. So if we look at one that has three bonds, we've got one bond here. But since we got two bronze and we need four electron groups, we're gonna have toe two lone pairs. So now we've got two lone pairs around the central Adam and two bones. So we could like in a molecule like this to water. So we would have Htoo. We'd have an oxygen in the middle with two lone payers and then we have two hydrogen bonded to it. And we know that water is not a linear molecule because those loan payers push these bonds down. So instead of them being linear, 180 degrees there pushed down and the bond angle is smaller, so it's less than 180 degrees. So we would say that a Tetris usual molecule with three atoms bonded together cannot be living. So this is not Winninger. Now, for our 2nd 1 we have an octave hydra molecule. Normally, we would have six things bonded together. So we have four things bonded Equatorial Lee to the Central Adam and two things in the axial position. But in this case, we can only have three atoms that we've got two things bonded to our central Adam again, like in our first example, two things bonded to the central Adam and will make the other four groups lone pairs. So this molecule is still a this molecules about the same shape as this one, minus the fact that on our left side we have four things in equatorial position for Adams in the equatorial position, and in this case, we've got four line payers, so we've got one lone pair. Two lone pairs really impairs four lone pairs. So in this case, we do have 180 degrees between the two bonds that we have drawn in that are actually Adams. We do have 180 degrees here between this Adam this Adam, it is linear. And that's because we have thes four lone pairs going around the central atom and to the actual Adams in an axial position. So we've got one in the centre, one above it, and one directly on the opposite side. And the lone pairs are circling up. So in this case, we do have a molecule that is linear. So it's molecular geometry is linear. Now, for our 3rd 1 we have triggered all plainer, which is three electron groups. So in this case, we have the same wealth. Our original tribunal, plainer with three actual bonding groups, would be a central Adam. So we've got a central Adam here, and we've got it bonded to three different things. So normally this is what it would look like, and we have a bond angle of 120 degrees. But in this case, we've got a central atom bonded to two other things, just like in our 1st 2 examples. One thing bonded to to other things, but we need three electron groups. As of now, we only have two. So we out of one pair Now we've got three electron groups that we have a tribunal plainer electron geometry. But since we have a lone pair here, we have a bond angle that is less than 120 degrees, meaning that this cannot be a linear molecule. So this, we would also say, is not linear, and something like this would actually be bent. So we have two things that are not letting our for original question asked us out of these three with three atoms per molecule, which of these electron geometries are not linear. So we would say Tetra hydro is not linear. Octahedron is linear and trickle plainer is not linear.

In this problem, they are asking, knows to find the type of center I will Adam or veto privatization that could respond to each other from group arrangement. So let's begin with this Dr Winner right here. So, as you can see, we have one, two and three groups. So the first thing that we need to do is that we need to say Okay, I have right here three groups off electrons. So if I have three groups of electrons is because three hybrid libidos are being used and let's go a little bit farther. If three hybrid or videos are being used, this central Adam has 123 groups. So I have and is okay to hybrid out. Let's move now to these otra hydro. So the first thing that we're gonna count is how many electron groups I have around the Central Adam. So I have 12345 and six. So I have six groups off electrons, meaning that if I have six groups off electrons, I have cigs Hi Bree Orbital's. And if I have six hybrid orbital's and I go right here, they have around my central Adam 123456 So the orbit of us that are gonna be used our orbital's ISS do and d So you know that in s you have one orbital Impey, you have three right here. You can have a maximum off five, but we only need six. So three plus one is four. I needed to in there. Now let's move to the linear Dolina Right here I have to groups off electrons one and two. So I have to high breed or beetles And then the hybridization of this since I have only to obedience being used is is Yeah. Now let's do the Tetra Hydro. Remember that Pete remains four. So I have 1234 Yeah, group off the deck dress If I have four group of electrons, that means that I have four Hi, Reed or videos. So if I have 400 Orbital's We know as we said before that we have ISS we have beat these have only one atomic and I need three. So the central Adam is SP three. And now let's do the last one right here We have 12345 So we have five rubes off electrons, Meaning that I'm gonna have five. Hi, Bree Orbit house. And if I have five hybrid orbital's, That means that I'm gonna have iss. Mmm. And be so I have one s, three B's and one B. Yeah. I hope that you will understand how to solve this type of problems.

The only molecular geometry of the three given that does not result in a linear tri atomic molecule with the removal of one or more. Adams is the tribunal plainer when we remove all of the atoms and we have just left a tri atomic molecule that in the molecular geometry is going to be bent at about 120 degrees, and it is not linear, the other to result in a linear tri atomic molecule.

In this example, which is considering several different molecular geometries where we're assuming that all of our electrons are involved in bonding purse. So we do not have any loan past, present. And if we would have to electron groups, then we would have linear structure, which it was an example of. This is CEO to where? What I mean by two electron groups is that around our central atom, we have two atoms. So my next example we've got three electron groups, so this would be tried going on play. Now, An example for this is S 03 So group Sex sofa uses all of its six valence electrons in bonding for a tribunal plane on confirmation on bonding On goes of about 120 degrees between each oxygen. Why old of our oxygen's air in the same plane? Lastly, we're looking at a four electron group. So an example of this would be touched a huge role. And we can look a me thing, which is the simplest hydrocarbon when we have full protons surrounding our group for carbon. So as you can see, all of our valence electrons on carbon are being used in bonding powers to generate that Tetra Hydro confirmation, where we have bonding angle of about 109.5 degrees.


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