Which satisfy octet rule pf5

Statistics Video Lessons. Microeconomics Video Lessons. Macroeconomics Video Lessons. Accounting Video Lessons. Join Clutch Prep Get a better grade with hundreds of hours of expert tutoring videos for your textbook Continue Continue OR Password must contain at least one uppercase letter, a number and a specific symbol. Which of these satisfy the octet rule and which do not? See all problems in Lewis Dot Structures: Exceptions. Frequently Asked Questions What scientific concept do you need to know in order to solve this problem?

What is the difficulty of this problem? How long does this problem take to solve? What professor is this problem relevant for? Similar arguments can be applied to boron trichloride, BCl 3 , which is a stable gas at room temperature. We are forced to write its structure as. Molecules such as BeCl 2 and BCl 3 are referred to as electron deficient because some atoms do not have complete octets.

Electron-deficient molecules typically react with species containing lone pairs, acquiring octets by formation of coordinate covalent bonds. Examples of molecules with more than an octet of electrons are phosphorus pentafluoride PF 5 and sulfur hexafluoride SF 6. Phosphorus pentafluoride is a gas at room temperature. It consists of PF 5 molecules in which each fluorine atom is bonded to the phosphorus atom.

Since each bond corresponds to a shared pair of electrons, the Lewis structure is. Instead of an octet the phosphorus atom has 10 electrons in its valence shell.

Sulfur hexafluoride also a gas consists of SF 6 molecules. Its structure is. An atom like phosphorus or sulfur which has more than an octet is said to have expanded its valence shell. This can only occur when the valence shell has enough orbitals to accommodate the extra electrons. However, the 3 d subshell is also available, and some of the 3 d orbitals may also be involved in bonding.

Expansion of the valence shell is impossible for an atom in the second period because there is no such thing as a 2 d orbital. Thus nitrogen can form NF 3 in which nitrogen has an octet but not NF 5. Phosphorus, on the other hand, forms both PF 3 and PF 5 , the latter involving expansion of the valence shell to include part of the 3 d subshell.

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