Which statement best describes the relationship between the system and the surroundings? O A. The system is found in the surroundings but is not included as part of the surroundings.
O B. The system is found in the surroundings and is part of the surroundings.
O C. The system is found around the surroundings and includes the surroundings.
D. The system is found around the surroundings but does not include the surroundings

that's what i got you can count the number of atoms

a electronegativity decreases beacuse the size of nucleus is bigger.

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.