uses of isotopes atoms

A symbol signifies a shorthand representation of an atom of an element. The symbol of any element is based on the English name or Latin name (written in English alphabets) and is represented by using only its first letter or the first letter and another letter. The first letter ..

Atoms and Molecules - Atoms And Molecules From the earliest times, man has always wondered about the ultimate nature of matter. He has searched to establish the basic constituents of all the substances. However, earlier efforts were more in the nature of speculations and not bas..

An atomic orbital is the space around the nucleus in which the probability of finding the electron is maximum. These most probable regions can be diagrammatically represented by cloud density (dot) diagrams. The density of dots (or lack of them) in any region of the cloud diagram, indicat..

One amu or u is used as the unit of mass in atomic physics. Mass of a C 1 2 atom is 12 atomic mass units. One u is defined as 1/12 t h of the mass of one C 1 2 atom. 1 atomic mass unit = 1 u = 1.66054 x 10 - 2 7 kg Mass of our ga..

The rules used for the calculation of oxidation number of an atom in a molecule are: The oxidation number of an element in the free or elementary state is always zero. For example, oxidation numbers of helium in He, hydrogen in H 2 , oxygen in O 2 , iron in Fe, bromine in Br ..

The unit in which atomic and nuclear masses are measured is called atomic mass unit (a.m.u). 1 a.m.u is defined as 1/12 t h of the mass of an atom of 6 C 1 2 isotope. It can be shown that 1 a.m.u = 1.66 x 10 2 7 kg. According to Einstein, mass energy equivale..

The indivisibility of an atom was proved wrong, for, an atom can be further subdivided into protons, neutrons and electrons. However an atom is the smallest particle, which takes part in chemical reactions. According to Dalton, the atoms of same element ..

06. - Using the Rydberg formula, calculate the wavelengths of the first four spectral lines in the Balmer series of the hydrogen spectru..

It is known that the atomic mass of an element/compound is not the mass of one atom or molecule of the said element/compound because they occur as a mixture of isotopes. As the atomic and molecular masses are expressed on a relative scale based on a mass of ..

where 'h' is a constant called 'Planck's constant' and is the frequency of radiation absorbed or emitted. The value of 'h' is 6.626x10 -34 J s -1 . The absorption and emission of light due to electron jumps are measured by use of spectrometers. This model of the atom was able to..