Answer the questions in the table below about the shape of the orthotellurate (Teo) anion. How many electron groups are around the central tellurium atom? Note: one "electron group" means one lone pair, one single bond, one double bond, or one triple bond.. What phrase best describes the arrangement of these electron groups around the central tellurium atom? (You may need to use the scrollbar to see all the choices.) 8 (choose one) X 5

why are some gases polar molecules? For example, SO2 is a polar molecule and a gas. CHCl3 is a polar molecule but a liquid. How come these two examples are both polar molecules but are in different states of matter?

The following Lewis diagram represents the valence electron configuration of a main-group element. (Express your answer as a chemical symbol.) The element in period 5 that has this valence electron congfiguration is

Choose the best Lewis structure from those presented below. (It will help to work out the missing formal charges for the atoms in these different structures) [Image description: Lewis structure A has a N atom singly bound to two O atoms. There is one electron pair on N. One O atom has three electron pairs and the other O atom has two electron pairs and another single bond to a H atom. Lewis structure B has a O atom, 01, singly bound to a N atom and doubly bound to another O atom, O2. There is one electron pair on O1 and two electron pairs on O2. On the N atom there are two electron pairs and another single bond to a H atom. Lewis structure C has a O atom, 01, singly bound to another O atom, O2, and doubly bound to a N atom. There are is one electron pair on 01 and two electron pairs plus another singly bond to a H atom on 02. There are two electron pair on N. Lewis structure D has a N atom singly bound to a O atom, O1, and doubly bound to another O atom, O2. There are two electron…

A chemical reaction produces formaldehyde, with a chemical formula of CH2O. Carbon is in Group 4A, oxygen is in Group 6A, and hydrogen is in Group 1A on the periodic table. In one to two sentences, can you describe the bonds in a molecule of formaldehyde in terms of valence electrons?

Predicting and naming the shape of molecules with a central atom.

An incomplete Lewis structure is shown below. The structure only shows the atoms and how they are connected. The molecule has a net charge of +1. Complete the Lewis structure giving all atoms full octets. If there is more than one way to do this, draw resonance structures showing all possibilities. If not, just draw one Lewis structure. Be sure to write in any non-zero formal charges.

Which choice below accurately describes a hydrate molecule?  It is just a water molecule   A covalent compound that bonds to a water molecule A covalent compound that bonds to a water molecule Ionic crystals that incorporate a set amount of water molecules in their structure. The negative anion is attracted the the positive cation of water.

Choose the best Lewis structure for OCN. (It will help to work out the missing formal charges for the atoms in these different structures) [Image description: Lewis structure A has a C atom singly bound to a O atom and a N atom. There are three electron pairs on O and three electron pairs on N. Lewis structure B has a C atom singly bound to a O atom and triply bound to a N atom. There are three electron pairs on O and one electron pair on N. Lewis structure C has a C atom triply bound to a O atom and singly bound to a N atom. There is one electron pair on O and three electron pairs on N. Lewis structure D has a C atom doubly bound to a O atom and a N atom. There are two electron pairs on O and two electron pairs on N.] :0-c-N: :0-c=N: :0=C-N: o=c=N: A B Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a b В C C d D