a which of these is an odd-electron molecule? O HBr O BrO O HOBг

Based on the concept of formal charge, what is the central atom in (a) HCN (do not include H as a possibility)? b) NOCI (Cl is always a terminal atom)?

hat does it mean to say that a bond is polar? Give two examples of molecules with polar bonds. Indicate in your examples the direction of the polarity.

What do Lewis structures and VSEPR/electron models tell u sand what is the difference between them?

The shape of a molecule of NH3 is said to be O Tetrahedral O Trigonal Bipyramidal O Bent OLinear

Explain formation of covalent bonds in the following chemical compounds (usim three theories). NH KF , Ar:. C:BrHz , BeClz.

Which of the following is the shortest bond? Which of the following bonds has the lowest BDE?

A molecule is connected H₂CC (O) CH₂ where the oxygen is connected to the middle carbon and the outside carbons are also connected to the middle carbon. The hydrogens are connected to the outside carbons. Which of the following represents the Lewis Dot Structure for this compound? A) B) H-C-C-C-H C) H H OB H DE OD DA DC H H H 80: H H H-C-C-C-H HC- H-C-C=C-H Both A and B are correct H o: H Both C and D are correct H 80: H D) H ●● H-C-C-C-H H E) H H H - 80: H ●● H -C-C-H 80: H

anion. Answer the questions in the table below about the shape of the orthotellurate (Teo-) a 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.) 山 (choose one) X S

Part I In the molecule FCI, which atom is the negative pole? O CI OF