1. Tardigrade
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  3. Chemistry
  4. In any period the valency of an element with respect to oxygen

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Q. In any period the valency of an element with respect to oxygen

Solution:

As we move along the period, an electron is subsequently added in the outer most shell of the elements and valency increases. However when the number of valence electrons is more than $ 4$ , then the valency is given by -
Valency $=$ group no. $-8$