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Question
In the atomic volume vs atomic weight of the elements graph, which of the following elements occupies a descending position on the curve?
In the atomic volume vs atomic weight of the elements graph, which of the following elements occupies a descending position on the curve?
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Solution
The correct option is D Mg
Less strongly electropositive alkaline earth metals occupy the descending positions on the curve. Therefore, Mg occupies a descending position on the curve.
If we see the graph between atomic volume and atomic weight of the elements, we will notice the following features:
i) Alkali metals such as Na, K, Rb which have similar properties occur at peaks of the curve. He didn't mention alkaline earth metals.
ii) Halogens like F, Cl, Br which have similar properties occur at the rising or the ascending parts of the curve.
iii) Noble gasses such as Ne, Ar, Kr which have similar properties occur just before the alkali elements.
iv) The atomic volume of the elements in a period initially decreases and then increases.
Less strongly electropositive alkaline earth metals occupy the descending positions on the curve. Therefore, Mg occupies a descending position on the curve.
If we see the graph between atomic volume and atomic weight of the elements, we will notice the following features:
i) Alkali metals such as Na, K, Rb which have similar properties occur at peaks of the curve. He didn't mention alkaline earth metals.
ii) Halogens like F, Cl, Br which have similar properties occur at the rising or the ascending parts of the curve.
iii) Noble gasses such as Ne, Ar, Kr which have similar properties occur just before the alkali elements.
iv) The atomic volume of the elements in a period initially decreases and then increases.
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