Question

how does the valency change when one moves left to right to the period​

Answer 1

Answer:

On moving from left to right in a period, the chemical reactivity of elements first decreases and then increases. On moving from left to rightin a period, the number of valence electrons increases from 1 to 8. ... Metallic character decreases as you move across a period in the periodic table from left to right.

Answer 2

$\huge{\underline{\red{\rm{Answer:}}}}$

→ When we move from left to right in periodic table , valency $\bold{\red{increases}}$ .

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Let us know more -

→ The valency of the element increases upto 4 and then it starts decreasing.

→ Valency is determined by the number of electrons present in valence shell .

→ Now the ques arise how can we calculate valency ? So if the electrons in valence shell are less than 4 then it is given by the same number of electron in valence shell, otherwise it is given by = 8 - Valence electrons.

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