Class 10SciencePeriodic Classification of ElementsMix Examples - Periodic Classification of Elements
Medium$(a)$ What is the basis of arranging the elements in the Modern Periodic Table?
$(b)$ How does this remove the problem of positioning of isotopes?
$(b)$ How does this remove the problem of positioning of isotopes?
(N/A) The basis of arranging elements in the Modern Periodic Table is the increasing order of their atomic number $(Z)$. This approach allows for more precise predictions of elemental properties.
$(b)$ Isotopes are atoms of the same element that have the same atomic number $(Z)$ but different atomic masses. Since the Modern Periodic Table is organized based on increasing atomic numbers,all isotopes of a given element share the same position. Therefore,they are placed in the same group and the same period,effectively resolving the problem of their positioning.
$(b)$ Isotopes are atoms of the same element that have the same atomic number $(Z)$ but different atomic masses. Since the Modern Periodic Table is organized based on increasing atomic numbers,all isotopes of a given element share the same position. Therefore,they are placed in the same group and the same period,effectively resolving the problem of their positioning.
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Similar Questions
The elements $Be$,$Mg$,and $Ca$,each having two electrons in their outermost shells,are in periods $2$,$3$,and $4$ respectively of the modern periodic table. Answer the following questions,giving justification in each case:
$(i)$ Write the group to which these elements belong.
$(ii)$ Name the least reactive element.
$(iii)$ Name the element having the largest atomic radius.
$(i)$ Write the group to which these elements belong.
$(ii)$ Name the least reactive element.
$(iii)$ Name the element having the largest atomic radius.
Medium
View SolutionCompare the radii of two species $X$ and $Y$. Give reasons for your answer.
$(a)$ $X$ has $12$ protons and $12$ electrons.
$(b)$ $Y$ has $12$ protons and $10$ electrons.
$(a)$ $X$ has $12$ protons and $12$ electrons.
$(b)$ $Y$ has $12$ protons and $10$ electrons.
Medium
View SolutionCalcium is an element with atomic number $20$.
$(i)$ Will it be a metal or a non-metal?
$(ii)$ What will be its valency?
$(iii)$ What would be the formula of its chloride?
$(iv)$ Will it be larger or smaller than $K$ (Potassium)?
$(i)$ Will it be a metal or a non-metal?
$(ii)$ What will be its valency?
$(iii)$ What would be the formula of its chloride?
$(iv)$ Will it be larger or smaller than $K$ (Potassium)?
Medium
View SolutionName the following:
$(a)$ $A$ metal that can be cut with a knife.
$(b)$ $A$ metal that is liquid at room temperature.
$(c)$ $A$ metal that has $3$ valence electrons.
$(a)$ $A$ metal that can be cut with a knife.
$(b)$ $A$ metal that is liquid at room temperature.
$(c)$ $A$ metal that has $3$ valence electrons.
Medium
View SolutionThe elements $A, B, C, D$ and $E$ have atomic numbers $9, 11, 17, 12$ and $13$ respectively. Which pair of elements belong to the same group?
Medium
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