Which statement is true?

dna forms a double helix; rna consists of a single strand.

dna forms a single strand; rna consists of a double helix.

rna forms a double strand; dna consists of a single helix.

rna forms a double strand; dna consists of a double helix.
done

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.