Class 10SciencePeriodic Classification of ElementsMix Examples - Periodic Classification of Elements
Medium$Na, Mg, Al, Si, P, S, Cl$ and $Ar$ are the elements of the third period.
$(a)$ Which one of them is an inert gas? Why?
$(b)$ Which one of them has a valency of $4$? What kind of bond does it form: ionic or covalent?
$(c)$ Which of them are electropositive? Pick any two.
$(a)$ Which one of them is an inert gas? Why?
$(b)$ Which one of them has a valency of $4$? What kind of bond does it form: ionic or covalent?
$(c)$ Which of them are electropositive? Pick any two.
(N/A) Argon $(Ar)$ is an inert gas because its outermost shell is completely filled with $8$ electrons,making it stable.
$(b)$ Silicon $(Si)$ has a valency of $4$. It forms covalent bonds because it shares its $4$ valence electrons to complete its octet.
$(c)$ Sodium $(Na)$ and Magnesium $(Mg)$ are electropositive elements because they have a tendency to lose electrons to attain a stable noble gas configuration.
$(b)$ Silicon $(Si)$ has a valency of $4$. It forms covalent bonds because it shares its $4$ valence electrons to complete its octet.
$(c)$ Sodium $(Na)$ and Magnesium $(Mg)$ are electropositive elements because they have a tendency to lose electrons to attain a stable noble gas configuration.
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Similar Questions
$K$ and $Ca$ have atomic numbers $19$ and $20$ respectively,and they belong to the same period.
$(a)$ Which among them would have a smaller atomic size?
$(b)$ Which one would be more electropositive?
$(c)$ To which group would each of them belong?
$(a)$ Which among them would have a smaller atomic size?
$(b)$ Which one would be more electropositive?
$(c)$ To which group would each of them belong?
Medium
View SolutionThe element $X$ has the following electron configuration $2, 8, 8, 2$. It means that it belongs to:
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.
Medium
View SolutionWrite the formulae of chlorides of Eka-silicon and Eka-aluminium,the elements predicted by Mendeleev.
Easy
View SolutionState the reason for the following:
$(a)$ The elements of the same group have similar chemical properties.
$(b)$ The elements of the same period have different properties.
$(a)$ The elements of the same group have similar chemical properties.
$(b)$ The elements of the same period have different properties.
Easy
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