Question

multiple select question
select all that apply
choose the options that correctly complete this sentence:when sodium and chlorine react to form sodium chloride,______
□ neutral sodium atoms (na) become sodium ions (na+)
□ sodium achieves a stable outer energy level similar to a noble gas
□ each chlorine atom loses an electron
□ one pair of electrons is shared between each sodium and chlorine atom
□ chlorine achieves a stable outer energy level similar to a noble gas
□ each sodium atom loses an electron

Explanation:

• Sodium (Na) has one valence electron. It loses this electron to form \(Na^{+}\) (so "neutral sodium atoms (Na) become sodium ions (\(Na^{+}\))" is correct).
• When sodium loses an electron, its electron configuration becomes similar to that of neon (a noble gas), so "sodium achieves a stable outer energy level similar to a noble gas" is correct.
• Chlorine (Cl) has 7 valence electrons. It gains an electron (not loses) to form \(Cl^{-}\). So "each chlorine atom loses an electron" is incorrect.
• Sodium chloride (\(NaCl\)) is an ionic compound (formed by the transfer of electrons, not sharing). So "one pair of electrons is shared between each sodium and chlorine atom" is incorrect.
• When chlorine gains an electron, its electron configuration becomes similar to that of argon (a noble gas), so "chlorine achieves a stable outer energy level similar to a noble gas" is correct.
• As mentioned earlier, sodium loses an electron, so "each sodium atom loses an electron" is correct.

Answer:

neutral sodium atoms (Na) become sodium ions (\(Na^{+}\)), sodium achieves a stable outer energy level similar to a noble gas, chlorine achieves a stable outer energy level similar to a noble gas, each sodium atom loses an electron.