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scoundrel [369]
3 years ago
5

The tendency of an element to react is closely related to

Chemistry
1 answer:
sweet-ann [11.9K]3 years ago
4 0

<u>Answer:</u> The tendency of an element to react is closely related to the number of valence electrons in the element.

<u>Explanation:</u>

Chemical reactivity is defined as the tendency of an element to loose of gain electrons.

Metals tend to loose electrons and so their chemical reactivity is the tendency to loose electrons.

Non-metals tend to gain electrons and so their chemical reactivity is the tendency to gain electrons.

The number of electrons that an element will loose or gain depends on the number of valence electrons present around that element.

<u>For Example:</u> Chlorine has 7 valence electrons and need 1 electron to complete its octet, whereas sulfur has 6 valence electrons and need 2 electrons to complete its octet.

So, chlorine will gain 1 electron easily than sulfur and thus, is more reactive than sulfur.

Hence, the tendency of an element to react is closely related to the number of valence electrons in the element.

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yuradex [85]

Answer:

Theoretical moles of V are 1.6 moles

Explanation:

The theoretical yield of a reaction is defined as the amount of product you would make if all of the limiting reactant was converted into product.

In the reaction:

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Based on the reaction, 1 mol of V2O5 needs 5 moles of Ca for a complete reaction. As there are just 4 moles, <em>limiting reactant is Ca.</em> As there are produced 2 moles of V per 5mol of Ca, Theoretical moles of V are:

4 moles of Ca × (2mol V / 5Ca) = <em>1.6 moles of V</em>

<em></em>

I hope it helps!

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