Aconversion factor is a fraction that is always equal to what number

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

Which metals are called noble metals

The diagin dilutepage 6 of 12a6a5(a)fluorine, chlorine, bromine and iodine are placed in the same group of theperiodic table.state the common name used to describe elements in this group.(i)state the group in which the elements are placed and explain whythey are placed in that group.(ii)which of the above named elements is a solid at roomtemperature and pressure?