Name of element flaurine what is latin name

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false

The chemical equation below shows the reaction of sodium (na) and chlorine (cl) to form sodium chloride (nacl). 2na + cl2 → 2nacl in this equation, which of the following is a reactant? i. sodium ii. chlorine iii. sodium chloride

Of the following elements, which is the least reactive? a. c b. h c. li d. he