how to calculate atomic mass

The unit in which atomic and nuclear masses are measured is called atomic mass unit (a.m.u..

The quantity of an element whose mass in grams is numerically equal to its atomic mass. In simple terms, atomic mass of an element expressed in grams is the gram atomic mass or gram atom. For example, the atomic..

An atom is a very minute particle and so the actual mass of an atom is extremely small. It is physically not possible to measure such small masses easily. In 1811, Avogadro suggested that atomic and molecular masses can be expressed on an..

The nuclei of atoms are made up of protons and neutrons. These two components of the nucleus are referred to as nucleons. The electrons occupy the space outside the nucleus. Since an atom is electrically neutral, the number of protons in the nucleus is exactly equal to the numb..

The nuclei of atoms are made up of protons and neutrons. These two components of the nucleus are referred to as nucleon..

. Lyman series from n = 2, 3, 4, 5to n = 1 Balmer series from n = 3, 4, 5, 6to n = 2 Paschen series from n = 4, 5, 6, 7to n = 3 Brackett series from n = 5, 6, 7, 8to n = 4 Pfund series from n = 6, 7, 8, 9to n = 5. The energy of the electron in a particular orbit of hydrogen atom could be ..

The charge to mass ratio is found by measuring the deflection of a ray under the simultaneous influence of electrical and magnetic fields, applied perpendicularly to each other as well as to the direction of the flow of light. This is illustrated in the figure below:..

A proton can be thought of as a hydrogen atom that has lost its electron. Since the mass of an electron is small, the mass of a proton is equal to the mass of a hydrogen atom. As the mass of hydrogen atom is for all practical pu..

The molecular mass of a substance is the relative mass of its molecule as compared with the mass of a 12 C atom taken as 12-units. It indicates the number of times; one molecule of the substance is heavier than atom..

The molecular mass of a substance is the relative mass of its molecule as compared with the mass of a 1 2 C atom taken as 12-units. It indicates the number of times, one molecule of the substance ..