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प्रश्न
Give a reason – Magnesium [2, 8, 2] has valency 2+.
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उत्तर
Valency of magnesium is 2+, Mg [2, 8, 2]
Electronic configuration of Mg is 2, 8, 2 i.e. there are 2 valence electrons which Mg can lose and achieve the stable configuration of nearest noble gas Neon.
Hence is cation Mg2+ has valency 2+.
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संबंधित प्रश्न
An element which can exhibit valencies of 2, 4 and 6 can be :
Give two examples of the following:
Liquid + Liquid mixture:
Match the symbols of metallic elements – with their correct combining power or capacity.
(a) K
(b) Zn
(c) Al
(d) Na
(e) Ca
Combining power or capacity – A : 3 ; B : 2 ; C : 1. (positive valencies)
Give the symbol of the following element:
Aluminium
State the type of element for the following:
Mercury
State the type of element for the following:
Fluorine
State the type of element for the following:
Neon
State the type of element for the following:
Xenon
Give the formula of the following gas:
Nitrogen dioxide
State whether the following ion or radical given below of a non-metallic element exhibits valency: 1–, 2– or 3–. (write the ion or radical with the correct valency).
Nitride
