Class 10SciencePeriodic Classification of ElementsMix Examples - Periodic Classification of Elements
MediumWhich group of elements could be placed in Mendeleev's Periodic Table without disturbing the original order? Give reason.
(A) The group of elements that could be placed in Mendeleev's Periodic Table without disturbing the original order is the Noble gases.
Reason:
$1$. Mendeleev's periodic law states that the properties of elements are a periodic function of their atomic masses.
$2$. Noble gases are chemically inert and possess very low reactivity due to their stable electronic configuration.
$3$. Because they do not react with other elements,they could be placed in a separate group (Group $0$ or $VIII$) without requiring any changes to the positions of the existing elements in the table.
Reason:
$1$. Mendeleev's periodic law states that the properties of elements are a periodic function of their atomic masses.
$2$. Noble gases are chemically inert and possess very low reactivity due to their stable electronic configuration.
$3$. Because they do not react with other elements,they could be placed in a separate group (Group $0$ or $VIII$) without requiring any changes to the positions of the existing elements in the table.
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Similar Questions
Identify and name the metals from the following elements whose electronic configurations are given below:
$(a)$ $2, 8, 2$
$(b)$ $2, 8, 1$
$(c)$ $2, 8, 7$
$(d)$ $2, 1$
$(a)$ $2, 8, 2$
$(b)$ $2, 8, 1$
$(c)$ $2, 8, 7$
$(d)$ $2, 1$
Medium
View SolutionThe electronic configuration of an element $X$ is $2, 8, 8, 2$. To which $(a)$ period and $(b)$ group of the modern periodic table does $X$ belong? State its valency. Justify your answer in each case.
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View SolutionWhich one of the following depicts the correct representation of atomic radius $(r)$ of an atom?
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View SolutionFind the atomic number of the element whose electronic configuration is $2, 8, 5$.
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View SolutionMention any two trends exhibited by elements when we go from left to right across the period of the periodic table.
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