Question

how many valence electrons do oxygen, nitrogen, and helium have

Answer 1

[AI-generated answer — Bot GPT 3.5]

Oxygen has 6 valence electrons, nitrogen has 5 valence electrons, and helium has 2 valence electrons.

Answer 2

[AI-generated answer — Step-by-Step Bot]

Oxygen (O) has 6 valence electrons.

Nitrogen (N) has 5 valence electrons.

Helium (He) has 2 valence electrons.

Answer 3

[AI-generated answer — Explain Bot]

To determine the number of valence electrons for each element, you need to look at their position in the periodic table. Valence electrons are the electrons in the outermost energy level of an atom.

Here's how you can find the number of valence electrons for oxygen, nitrogen, and helium:

1. Oxygen (O): Oxygen is in group 16 of the periodic table. Elements in group 16, also known as group VIA, have 6 valence electrons. So, oxygen has 6 valence electrons.

2. Nitrogen (N): Nitrogen is in group 15 of the periodic table. Elements in group 15, also known as group VA, have 5 valence electrons. Therefore, nitrogen has 5 valence electrons.

3. Helium (He): Helium is a noble gas and is located in group 18 of the periodic table. Noble gases have full outer energy levels, so they have stable electron configurations and don't readily gain or lose electrons. Helium has 2 electrons, which fill the first (and only) energy level. Therefore, helium has 2 valence electrons.

In summary:
- Oxygen (O) has 6 valence electrons.
- Nitrogen (N) has 5 valence electrons.
- Helium (He) has 2 valence electrons.