Question

1. which statements of the following best explain why the noble gases being so unreactive? select two correct answers. noble gases have more electrons than protons. noble gases have large atomic radii. noble gases have a full outer shell of electrons. noble gases are easily ionized. noble gases are neutrally charged.

Explanation:

To solve this, we analyze each statement about noble gases:

1. Noble gases have fewer electrons than protons: Noble gases are neutral, so electrons = protons. This is false.
2. Noble gases have large atomic radii: Noble gases have the largest atomic radii in their periods (due to van der Waals radii, as they don’t form bonds to pull electrons closer). This is true.
3. Noble gases have a full outer shell of electrons: Noble gases (except He, which has 2) have 8 valence electrons (full octet), making their outer shell complete. This is true.
4. Noble gases are easily ionized: Noble gases have high ionization energy (stable electron configuration), so they are hard to ionize. This is false.
5. Noble gases are neutrally charged: Atoms (including noble gas atoms) are neutral (electrons = protons). This is true.

Answer:

• Noble gases have large atomic radii
• Noble gases have a full outer shell of electrons
• Noble gases are neutrally charged