The mass number of an atom tells us about its atomic weight. What is the atomic weight of carbon?
6 units
12 units
18 units
36 units
The atomic weight of carbon is the same as the mass number of carbon i.e. 12. It has 6 protons, 6 electrons, and 6 neutrons.
The mass numbers of three isotopes of an element are 10, 12, and 14 units. Their percentage abundance is 80, 15 and 5, respectively. What is the atomic weight of the element?
Atomic mass of an element is 36, what will be the mass of an unit cell if it crystallizes as face centered cubic unit cell?