Question

nding
electrons in atoms
neon (ne)
in chemical
reactions, atoms
tend to gain or lose
electrons so that
their outer shells are
full. the first shell
around the nucleus is
full when it contains
two electrons. the
second shell is filled
when it has eight
electrons. neon has
two full shells

Explanation:

To determine the number of electrons in each shell of Neon (Ne) and check if the shells are full, we analyze the given information:

Step 1: Recall Shell Filling Rules

• The first electron shell (closest to the nucleus) is full with \( 2 \) electrons.
• The second electron shell is full with \( 8 \) electrons.

Step 2: Count Electrons in Neon’s Shells

From the diagram:

• First shell (inner shell): Let's assume the inner shell (closest to the nucleus) has \( 2 \) electrons (consistent with the rule for a full first shell).
• Second shell (outer shell): The diagram shows \( 8 \) electrons (since the second shell is full with \( 8 \), and Neon’s outer shell appears to have \( 8 \) electrons).

Step 3: Verify Full Shells

• First shell: \( 2 \) electrons (matches the “full” rule for the first shell).
• Second shell: \( 8 \) electrons (matches the “full” rule for the second shell).

Thus, Neon has a full first shell (\( 2 \) electrons) and a full second shell (\( 8 \) electrons), so its electron shells are complete.

Answer:

Neon has 2 electrons in its first (inner) shell and 8 electrons in its second (outer) shell, with both shells full (first shell full at 2, second at 8).