Question

question 2 of 6
click on the following statements that are true.
☐ sodium loses an electron to become a sodium ion
☐ sodium gets smaller because it loses an energy level
☐ the sodium ion has the same electron configuration as neon.
☐ the sodium atom has an octet.

Explanation:

• Sodium (Na) has an electron configuration of \(1s^{2}2s^{2}2p^{6}3s^{1}\). It loses one electron (from the \(3s\) orbital) to become \(Na^{+}\) (sodium ion). So, "Sodium loses an electron to become a Sodium ion" is true.
• When sodium loses an electron, it loses the \(3s\) orbital (an energy level). Since the ion has one less energy level, it gets smaller. So, "Sodium gets smaller because it loses an energy level" is true.
• After losing an electron, \(Na^{+}\) has an electron configuration of \(1s^{2}2s^{2}2p^{6}\), which is the same as Neon (\(Ne\)) (\(1s^{2}2s^{2}2p^{6}\)). So, "The Sodium ion has the same electron configuration as Neon" is true.
• An octet means having 8 electrons in the outermost shell. Sodium atom has 1 electron in its outermost (\(3s\)) shell. So, "The Sodium atom has an octet" is false.

Answer:

• Sodium loses an electron to become a Sodium ion
• Sodium gets smaller because it loses an energy level
• The Sodium ion has the same electron configuration as Neon