Which of the following sets of elements is wr | vedclass

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Question

(A) Metallic character refers to the tendency of an element to lose electrons.In a group,metallic character increases as we move down because the atom

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$Be, Mg, Ca$

Vedclass · Answer

(A) Metallic character refers to the tendency of an element to lose electrons.In a group,metallic character increases as we move down because the atomic size increases and the valence electrons are held less tightly by the nucleus.In a period,metallic character decreases from left to right because the atomic size decreases and the effective nuclear charge increases,making it harder to lose electrons.For option $A$: $Be, Mg, Ca$ are all in Group $2$. As we move down the group from $Be$ to $Mg$ to $Ca$,the metallic character increases.For option $B$: $Li$ is in Period $2$,while $Na$ and $K$ are in Period $3$ and $4$ respectively. The order $Na, Li, K$ is not increasing.For option $C$: $Mg, Al, Si$ are in the same period. Metallic character decreases from $Mg$ to $Si$.For option $D$: $C, N, O$ are in the same period. Metallic character decreases from $C$ to $O$.Therefore,the correct set is $Be, Mg, Ca$.

Which of the following sets of elements is written in the order of their increasing metallic character?

Similar Questions

Which of the following statements is not a correct statement about the trends when going from left to right across the periods of the periodic table?

Arrange the following elements in the order of their decreasing metallic character:
$Na, Si, Cl, Mg, Al$

Which of the following sets of elements is written in the order of their increasing metallic character?

Name:
$(a)$ three elements that have a single electron in their outermost shells.
$(b)$ two elements that have two electrons in their outermost shells.
$(c)$ three elements with filled outermost shells.

State 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.

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Which of the following sets of elements is written in the order of their increasing metallic character?

Similar Questions

Which of the following statements is not a correct statement about the trends when going from left to right across the periods of the periodic table?

Arrange the following elements in the order of their decreasing metallic character:$Na, Si, Cl, Mg, Al$

Which of the following sets of elements is written in the order of their increasing metallic character?

Name:$(a)$ three elements that have a single electron in their outermost shells.$(b)$ two elements that have two electrons in their outermost shells.$(c)$ three elements with filled outermost shells.

State 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.

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Arrange the following elements in the order of their decreasing metallic character:
$Na, Si, Cl, Mg, Al$

Name:
$(a)$ three elements that have a single electron in their outermost shells.
$(b)$ two elements that have two electrons in their outermost shells.
$(c)$ three elements with filled outermost shells.

State 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.