After determining how many valence electrons there are in CH3-, place them around the central atom to complete the octets. Also note that you should put the CH3 Lewis structure in parentheses with 1- outside to show that it is an ion with a negative one charge.

Also wondering why ch3 violates the octet rule ?

B(CH3)3 violates the octet rule because the B atom has only six valence electrons in its valence shell. The octet rule is a chemical rule of thumb that states that atoms of main group elements combine in such a way that each atom has eight electrons in its valence shell. This is a violation of the octet rule.

Second, how many valence electrons does ch3 have? 8 valence electrons

Similarly, what charge does ch3 have?

In the CH3 ion, the carbon atom forms 3 double bonds and gives it 7 electrons in its outer shell, so it will tend to picking up another electron to bring the total to 8. This is an extra electron not originally attached to any of the atoms in the group, so it will have a charge of -e, or it will be a CH3(- 1) ion.

What elements does the octet rule apply?

The octet rule and its exceptions

The rule applies to the main group elements, in particular carbon, nitrogen, oxygen and the halogens, but also metals such as sodium and magnesium. Valence electrons can be counted using a Lewis electron dot diagram.

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## Is h2o electron deficient?

If the central atom has exactly 8 electrons, it says electron-precisely, H2O, NH3 all are examples. After all, you must have already found out whether the central atom has fewer than 8 electrons, whether it is electron poor or electron deficient. These act as Lewis acids. BH3, BF3, AlCl3 are examples.

## What is the Lewis structure for no?

For NO, the skeletal structure is N-O. You have 14 valence electrons in your experimental structure. The valence electrons available to you are: 1 N + 1 O = 1×5 + 1×6 = 11. The experimental structure has three additional electrons.

## What is the formula for the formal charge?

However, since the term “number of bonding electrons divided by 2″ is also equal to the number of bonds surrounding the atom, here is the shortcut formula: Formal charge = [number of valence electrons on atom] – [unbonded Electrons + number of bonds].

## What is the name of ch3?

A methyl group is a methane-derived alkyl containing one carbon atom bonded to three hydrogen atoms – CH3. In formulas, the group is often abbreviated to Me. Such hydrocarbon groups are found in many organic compounds. It is a very stable group in most molecules.

## How do I calculate bond order?

If the molecule contains more than two atoms, follow these steps to determine bond order :

1. Draw the Lewis structure.
2. Count the total number of bonds.
3. Count the number of bonding groups between individual atoms.
4. Share Divide the number of bonds between atoms by the total number of bonding groups in the molecule.

## Is nh2 positive or negative?

The NH2-ion is NH2 – – it has an extra electron giving it a charge of -1. So you get five electrons from the nitrogen, 1 from each hydrogen, and 1 extra to give a negative charge – a total of eight electrons (octet around nitrogen).

## Is ch3+ trigonal planar?

CH3+ is trigonal planar, so the dipole moments cancel.

Carbon has 6 electrons and each hydrogen loses one electron… so the answer is 9. hence the CH3 radical contains 7 valence electrons

## What are the 3 exceptions to the octet rule?

However, there are three general exceptions to the octet rule: Molecules like NO, with an odd number of electrons; Molecules in which one or more atoms have more than eight electrons, such as SF6; and. Molecules such as BCl3in which one or more atoms have fewer than eight electrons.

## Does oxygen obey the octet rule?

An octet corresponds to an electron configuration that ends with s2p6. So O2 does not satisfy the octet rule, because as we know, the octet rule states that an atom must have 8 e- in the outer shell. Oxygen has 6 valence electrons, the bonds should be 8-6=2 bonds. So we need 2 more covalent bonds to form an octet.

## What violates the octet rule?

There are three violations of the octet rule: molecules with odd electrons, molecules with electron deficiency , and extended valence shell molecules.

## Why is it called an octet?

Octets are very commonly used in technology. For example, the eight binary digits in a byte were called an octet. The term “octet” is used to avoid ambiguity as some old computers had different numbers of bits per byte. It is mainly used to describe IP addresses.

## Why is the octet rule important?

The octet rule is important in covalent bonds because sharing electrons gives both atoms a full valence shell . Each atom counts the four shared electrons as part of its valence shell. Thus, each atom has eight valence electrons, a stable noble gas configuration.

## What is an example of the octet rule?

Covalent example. For example, the carbon dioxide molecule combines a carbon atom with two oxygen atoms. Carbon with four electrons in its valence shell needs four to reach the octet state. Oxygen with six outer electrons needs two.

## How do you find the valence of h2so4?

The O is -2 and there are 4 of them for a total of -8 . So the S must be +6 to make the whole connection neutral. So then you have +2 for H, +6 for S and -8 for the O. This is the valence of H2SO4.

## How many lone pairs are in ch3?

The carbanion has three bonding pairs and one lone pair.

## How can we find the valence?

The valence of an atom is equal to the number of electrons in its outer shell when that number is four or fewer. Otherwise, the valence is equal to eight minus the number of electrons in the outer shell. Once you know the number of electrons, you can easily calculate the valence.