Verified Answer :

Answer;

2 atoms of nitrogen

Explanation;

  • A compound is a substance that is made up of different types of atoms from different elements. For example water is a compound made up of hydrogen and oxygen atoms.
  • In this case; Ni(NO₃)₂, is an example of a compound. It is made up of 1 nickel atom,  2 atoms of nitrogen, and six atoms of oxygen.

Answer:

The correct answer is two nitrogen atoms.

Explanation:

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In the molecule of Ni (NO3) 2 there are two nitrogen atoms. This is a reaction between a compound with Nickel (Ni) that has a valence number +2, and the nitrogen acid. When the hydrogen atom leaves the acid, there is a NO3- ion, this means that it is left with a negative charge. To be able to form the molecule and make it stable we will need 2 NO3- ions.

So in total there are two nitrogen atoms

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