The number of neutrons in the atoms of an element is equal to its atomic number. True or False.
True
False
Number of neutrons in an atom is equal to atomic mass - atomic number.
An atom containing 11 protons and 12 neutrons has mass number equal to 23. . True or False
J.J. Thomson proposed that the nucleus of an atom contains only neutrons. True or False.
The mass of 1 mole of atom of an element is its molar mass. True or False?