Question

1.) which energy level around the nucleus of an atom has the lowest energy?
(1 point)

○ i

○ ii

○ iii

○ iv

2.) which statement(s) are true about valence electrons?
select all that apply

(1 point)

□ atoms are very reactive when they have full valence energy levels.

□ atoms are stable when they have as many valence electrons as possible.

□ valence electrons determine many of the properties of an atom.

□ atoms readily lose or gain valence electrons in order to achieve a full outer energy level.

3.) the maximum number of electrons that are possible at a given energy level depends on the number of ______ at that energy level. (1 p
○ orbitals

○ valence electrons

○ sublevels

○ electrons

Explanation:

1. Energy levels are numbered starting from the nucleus; level I is closest and lowest in energy.
2. Valence electrons determine reactivity/stability: full valence shells mean stability, not reactivity; atoms gain/lose them to fill shells, and they influence atomic properties.
3. Each orbital holds max 2 electrons, so total electrons per energy level depend on orbital count.

Answer:

1. I
2. Valence electrons determine many of the properties of an atom; Atoms readily lose or gain valence electrons in order to achieve a full outer energy level
3. orbitals