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Hi,

None of them is / are there.

None of it belongs to them.

Are these correct?

What about none of it belong to me?
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hileyyyYou must have a -s or -es to indicate possession.
An s/es never indicates possession. It is added to a verb in the third person singular simple present tense.

CB
Comments  
1. None of them are xxx.
Examples:
None of them are here.
None of the dogs are brown.

2. None of it belongs to them is correct, however you forgot the -s when you wrote "None of it belong to me". You must have a -s or -es to indicate possession.

Hope this helps you!
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 Cool Breeze's reply was promoted to an answer.
cybercrystalNone of them is / are there.
Both are correct. When an uncountable noun or a singular pronoun follows, only a singular verb is correct:

None of it belongs to me.

CB
How about "I've done none of it"? I'm a bit confuse about using that phrase.
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