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- Among the isoelectronic species Na+, Mg2+, F- and O2-. The correct order of their radii is:Option: 1</stron
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Among the isoelectronic species Na+, Mg2+, F- and O2-. The correct order of their radii is:
Mg2+ < Na+ < F- < O2-
Na2+ < F- < Mg2+ < O2-
O2- < F- < Mg2+ < Na+
F- < O2- < Mg2+ < Na+
Answers (1)
Atomic Radius of Elements -
There are various physical properties that follow the trend according to the atomic numbers of elements.
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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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In isoelectronic species, the largest size of atom or ion is the one that has the least nuclear charge and as the nuclear charge increases, the size decreases.
Therefore, Option(1) is correct
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