Number of elements from the following that CA | vedclass

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Question

(D) The group valency is determined by the number of valence electrons or $8$ minus the number of valence electrons.Elements in the second period $(N,

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$3$

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(D) The group valency is determined by the number of valence electrons or $8$ minus the number of valence electrons.Elements in the second period $(N, O, F)$ cannot exhibit valencies matching their group number (e.g.,$N$ in group $15$ cannot show a valency of $5$) because they lack vacant $d$-orbitals in their valence shell.$B, C, Al, Si, P, S$ can exhibit valencies corresponding to their group numbers.Thus,the elements that cannot form compounds with valencies matching their group valencies are $N, O, F$.The total count is $3$.

Element	Information
$P$	Period number: $2$,Group number: $15$
$Q$	Period number: $3$,Group number: $2$

Number of elements from the following that $CANNOT$ form compounds with valencies which match with their respective group valencies is
$B, C, N, S, O, F, P, Al, Si$

Similar Questions

The atomic number of an element which shows the oxidation state of $+3$ is

Identify the element which can have the highest oxidation number among the given options.

Predict the formula of the stable binary compounds that would be formed by the combination of the following pairs of elements:
$(a)$ Lithium and oxygen
$(b)$ Magnesium and nitrogen
$(c)$ Aluminium and iodine
$(d)$ Silicon and oxygen
$(e)$ Phosphorus and fluorine
$(f)$ Element $71$ and fluorine

Consider the following information about elements $P$ and $Q$:

Element Information

$P$ Period number: $2$,Group number: $15$

$Q$ Period number: $3$,Group number: $2$

Then,the formula of the compound formed by elements $P$ and $Q$ is:

Which of the following elements has a valency of zero?

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Number of elements from the following that $CANNOT$ form compounds with valencies which match with their respective group valencies is $B, C, N, S, O, F, P, Al, Si$