science

posted by .

How do I show HCN with the lewis dots

• science -

1 H = 1 x 1e each = 1 electron.
1 C = 1 x 4e each = 4 electrons.
1 N = 1 x 5e each = 5 electrons.
total = 10 electrons.

How many do we need? We need 8 for C, 8 for N, and 2 for H; therefore, we need our 10 electrons to do the job of 18 electrons. The difference is 18-10 = 8 and if we have electrons paired that is 8/2 = 4 bonds.
H:C:::N:

This gives us 4 bonds, C has 4 (which is usual), H has 1 (which is usual), N has 3 (which is usual), and we have used 10 electrons. Furthermore, we have two electrons around H, 8 around C and 8 around N. Have you learned how to do the formal charge. That is zero on H, zero on C, and zero on N.

Similar Questions

1. physics

is this the strutual formula for hydrogen cyanide H:C:::N and is this correct for cyanogen :N:::C:C:::N any advice woulds be appreciated This is more chemistry than physics. It is important to put the subject line carefully in order …
2. Chem

Concerning compounds cyanogen, Hydrogen cyanide and sodium cyanide. Cyanogen = C2N2 (CN)2 Hydrogen Cyanide = HCN boils at 26C and yeilds an acid solution when added with water. Sodium Cyanide = empirical formula NaCN is a solid melts …
3. chemistry

help needed to draw lewis structures of hydrogen cyanaide(HCN) and cyanogen(CN)2. I need to show where the electrons are being shared clearly. H:C:::N: shared electrons, all upper dots except the ones to the right of N. :N:::C:C:::N: …
4. chemistry

I have to draw Lewis structures for hydrogen cyanide and cyanogen with nitrogen valency of three. Would I still need 2 dots after the N in hydrogen cyanide or would this represent nitrogen with a valency of 5?
5. Chemistry

Can you tell me if i did these right?? Lewis Dot Structure A. BrF = 5 dots around Br-F with 5 dots around it B. PBr3 = ?
6. science

NO2 ( negative by the 2 on the right side) how do I do this as lewis dots
7. chemistry

What is the pH of a 1.24 mol/L solution of HCN(aq) if its Ka = 6.2 x 10-10?
8. Chemistry

What is the Lewis dot structure for LiF? Is it Li - F with 2 dots on each side of F?
9. Chemistry

For a lab experiment we have to draw the lewis structures of hydrides. 1) Carbon It asks for the formula of hydride. Total # of valence electrons and the lewis structure. Total electrons would be four. I am not sure what the formula …
10. CHEM

the number of nonbonding electrons exceeds the number of bonding electrons in the lewis structure of which of the following molecules?

More Similar Questions