WHAT ARE ISODIASPHERE AND ISOSTERS

Isosters – The moelcuales having same number of atoms and electrons are called isosters.Example: CO2 and NO2 have 3 atoms and 22 electrons each.

 

Isodiapheres – The atoms having the same difference of neutrons and protons are called isodiapheres.In other words, isodiaspheres are nuclides that have the same neutron excess number. Example:

Difference in number of neutrons and protons:

 = number of neutrons – number of protons = 144 – 90 = 54

 = number of neutrons – number of protons = 146 – 92 = 54

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