Answer: it is A.
Explanation:
Compare the electric force and gravitational force. ... Both forces are inversely proportional to the square of the distance between the objects, this is known as the inverse-square law. ... If there are two charges that are DIFFERENT, they attract.
NaCI this wht forms when sodium and choride combine
NaCl - also known as sodium chloride or table salt; an ionic bond; it’s a chemical compound, so both
SO2 - also known as sulfur dioxide; a covalent bond; nonmetal
CaO - also known as calcium oxide; an ionic bond; metal
HF - also known as hydrogen fluoride; polar covalent; metal
NO2 - also known as nitrogen dioxide; covalent; nonmetal
H2O - also known as water; covalent; nonmetal
2C4H10 + 13O2 -> 8CO2 + 10H2O