Photo AI
Look at the information about a nitrogen atom - OCR Gateway - GCSE Chemistry: Combined Science - Question 10 - 2020 - Paper 1
Question 10
Look at the information about a nitrogen atom. N How many electrons are in a nitride ion, N^{3-}? A 4 B 10 C 11 D 17 Your answer
Worked Solution & Example Answer:Look at the information about a nitrogen atom - OCR Gateway - GCSE Chemistry: Combined Science - Question 10 - 2020 - Paper 1
Step 1
How many electrons are in a nitride ion, N^{3-}?
Answer
To determine the number of electrons in a nitride ion (N^{3-}), we first need to know the number of protons in a neutral nitrogen atom, which is 7. In a neutral atom, the number of electrons equals the number of protons.
- Identify the number of protons in nitrogen: There are 7 protons in a nitrogen atom.
- Determine the charge of the ion: The nitride ion has a
3-charge, which means it has gained 3 additional electrons. - Calculate the total number of electrons:
- Starting with the 7 electrons from neutral nitrogen, add the 3 extra electrons:
Therefore, the nitride ion, N^{3-}, has 10 electrons.