Question

How does the valency of elements vary its group number
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Answer 1

Answer:

i) The valency remains same in going down the group. ii) The valency first increases from 1to 4 and then decrease 4 to 0, in going from left to right in the period of the periodic table. Write the number of vertical columns in the modern periodic table. ... (ii) Calculate the valency of element X whose atomic number is 9.

Explanation:

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Answer 2

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The valency remains same in going down the group. ii) The valency first increases from 1to 4 and then decrease 4 to 0, in going from left to right in the period of the periodic table. Write the number of vertical columns in the modern periodic table. ... Hence, the valency of the element with atomic number 9 is 1

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