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  4. Variation of valency while moving along a period left to right is shown below <img class=img-fluid question-image alt=image src=https://cdn.tardigrade.in/img/question/chemistry/61ec7811aa40105a7fd1cb2868ef80dc-.png /> <img class=img-fluid question-image alt=image src=https://cdn.tardigrade.in/img/question/chemistry/8558aa75609f29b3090306723e0fb975-.png /> Select the correct statement(s)

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Q. Variation of valency while moving along a period left to right is shown below
image
image
Select the correct statement(s)

Classification of Elements and Periodicity in Properties

Solution:

As given in graph I, valency increases from 1 to 7 while moving along a group in $s$ and $p$ -block. It is w.r.t. oxygen. From Graph II, valency increases from 1 to 4 and then decreases to 1 . It is w.r.t. hydrogen