Which of the following sets of elements is wr | vedclass

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

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$Be, Mg, Ca$

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(B) 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 $B$: $Be$ (Group $2$,Period $2$),$Mg$ (Group $2$,Period $3$),and $Ca$ (Group $2$,Period $4$). As we move down Group $2$ from $Be$ to $Mg$ to $Ca$,the metallic character increases. Therefore,the order $Be < Mg < Ca$ represents increasing metallic character.

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

Similar Questions

Write the trend of atomic size and metallic character along a group and a period in the modern periodic table.

$(a)$ What is the basis of arranging the elements in the Modern Periodic Table?
$(b)$ How does this remove the problem of positioning of isotopes?

$(a)$ State the main characteristics of elements on which the modern periodic table is based.
$(b)$ No fixed position can be assigned to hydrogen in the periodic table. Why?

The atomic number of $Na$ and $Mg$ is $11$ and $12$ respectively and they belong to the same period.
$(a)$ Which one would have smaller atomic size?
$(b)$ Which one would be more electropositive?
$(c)$ To which group would each one belong?

$(a)$ Amongst the following elements,identify the ones that would form anions:
$K, O, Na, F, Ca, Cl, Mg$
$(b)$ Write the electronic configuration of the anions identified above.

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