Chemistry Bonding Question help?

anyone

Which type of bond is formed between N and B when a molecule of NH3 reacts with a molecule of BF3?
A Ionic.
B Covalent. X Nitrogen and boron. n has lone pair, donates it to b
C Co-ordinate.
D Van der Waals.

Q5.Which of these substances does not show hydrogen bonding?
A HF
B NH3
C CH3COOH
D CHF3 X h is not bonded to F N or O

.Which of these substances has permanent dipole-dipole attractions between molecules?
A CCl4 (can't be this, its tetrahedral)
B C2F4 (planar molecule)
C (CH3)2CO
D CO2 X not sure but this is the only one that has a neg point and pos point of its 3d structure.

Q9.In which one of the following species is the shape influenced by the presence of one or more lone pairs of electrons?
A NH ???
B NH ???? I'm confused, a and b- these are the same
C [CH3NH3]+
D [Co(NH3)6]2+

You have a very fitting name for this...

Which type of bond is formed between N and B when a molecule of NH3 reacts with a molecule of BF3?
A Ionic.
B Covalent. X Nitrogen and boron. n has lone pair, donates it to b
C Co-ordinate.
D Van der Waals.

Q5.Which of these substances does not show hydrogen bonding?
A HF
B NH3
C CH3COOH
D CHF3 X h is not bonded to F N or O

.Which of these substances has permanent dipole-dipole attractions between molecules?
A CCl4 (can't be this, its tetrahedral)
B C2F4 (planar molecule)
C (CH3)2CO
D CO2 X not sure but this is the only one that has a neg point and pos point of its 3d structure.

Q9.In which one of the following species is the shape influenced by the presence of one or more lone pairs of electrons?
A NH ??? if you meant nh3, that would be the answer
B NH ???? I'm confused, a and b- these are the same
C [CH3NH3]+
D [Co(NH3)6]2+

for q9 it's nh2- and nh4-

also the markscheme states that the first question's answer is C, not B

Sorry thats what i meant, if n donates a lone PAIR it would be coordinate bonding anyway because theres no sharing from the b. i just put it next to the wrong letter.

thank you for the help. i was wondering if i'm struggling with these questions because i haven't actually learnt about 3d or linear shapes of molecules or anything? could this be so?

yes definitely, you need that knowledge for most of the questions. maybe you will learn it later in the year?

3.Which type of bond is formed between N and B when a molecule of NH3 reacts with a molecule of BF3?

C Co-ordinate. ----there is donation of e pair from N to B


Q5.Which of these substances does not show hydrogen bonding?

D CHF3 -----------H is not bonded to very electronegative atom.

.Which of these substances has permanent dipole-dipole attractions between molecules?

C (CH3)2CO


Q9.In which one of the following species is the shape influenced by the presence of one or more lone pairs of electrons?
Answers are not clear.

thanks. for 5 where the answer is d could you explain how you got to this answer as in how you know h isnt bonded to a very electronegative atom?

could you please tell me

thanks. for 5 where the answer is d could you explain how you got to this answer as in how you know h isnt bonded to a very electronegative atom?

It's because this is a substituted alkane, all haloalkanes are.
The central carbon atom has individual bonds to each of the other atoms, and the other atoms do not have any bonds to each other.

thanks. for 5 where the answer is d could you explain how you got to this answer as in how you know h isnt bonded to a very electronegative atom?