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- Among the given species Fe, Fe2+ and Fe3+, what is the correct order of size:Option: 1 Fe2+ <
- #Engineering
- #National Eligilibility Cum Entrance Test
- #Classification of Elements and Periodic table
- #Chemistry
- #Joint Entrance Examination Main
Among the given species Fe, Fe2+ and Fe3+, what is the correct order of size:
Fe2+ < Fe < Fe3+
Fe< Fe2+ < Fe3+
Fe3+ < Fe < Fe2+
Fe3+ < Fe2+ < Fe
Answers (1)
Atomic Radius of Elements -
There are various physical properties that follow the trend according to the atomic numbers of elements.
-
Atomic Radius
Atomic radius is the distance from the centre of the nucleus to the outermost shell of electrons. It can be measured by the x-ray diffraction, electron diffraction techniques and other spectroscopic methods. As it cannot be measured in absolute form thus it is measured in various definitions such as covalent radius, Van der Waal’s radius, metallic radius and ionic radius.
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Ionic Radius
It is the effective distance from the centre of the nucleus of an ion upto which it has the influence over the electrons.
The size of any atom or ion decreases as the positive charge on it increases.
Therefore, Option(4) is correct
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