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3 years ago

Why are group 5A element have different oxidation state from -3 to +5

Chemistry

1 answer:

leva [86]3 years ago

6 0

Answer:

Because the oxidation state is an artificial number

Explanation:

The oxidation state is the charge that an atom would have if all its shared electrons belonged to the more electronegative atom, that is, if the bonds were completely ionic. This seldom happens.

For example, consider NH₃ and HNO₃.

Both compounds are covalent.

However, the N in NH₃ has an oxidation number of -3, because N is more electronegative than H.

Thus, N "gains" the three H electrons and gets a theoretical charge of -3.

The N in HNO₃ has an oxidation number of +5, because O is more electronegative than N.

Thus, N "loses" its five electrons and gets a theoretical charge of +5.

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2. Nitrogen has two naturally occurring

kvv77 [185]

Answer:

Suppose that:

Mass of N-14= 14

and Mass of N-15= 15

fraction N-14 x 14 + fraction N-15 x 15 = 14.007

now.. if the fractions were =, that is if fraction N-14 = fraction N-15 = 0.5, then...

0.5 x 14 + 0.5 x 15 = 14.5

more N-15 would make that number larger...

0.3 x 14 + 0.7 x 15 = 14.7

let x = abundance of N-14, then (1-x) = abundance of N-15, and we could solve for x.

(X)x14 + (1-X)x 15 = 14.007

14X + 15 - 15X = 14.007

X = 0.993

the relative abundance of N-14 = 99.3%

the relative abundance of N-15 = 0.7%

So, according to the above explanation N-14 is abundant

Explanation:

Suppose that:

Mass of N-14= 14

and Mass of N-15= 15

fraction N-14 x 14 + fraction N-15 x 15 = 14.007

now.. if the fractions were =, that is if fraction N-14 = fraction N-15 = 0.5, then...

0.5 x 14 + 0.5 x 15 = 14.5

more N-15 would make that number larger...

0.3 x 14 + 0.7 x 15 = 14.7

let x = abundance of N-14, then (1-x) = abundance of N-15, and we could solve for x.

(X)x14 + (1-X)x 15 = 14.007

14X + 15 - 15X = 14.007

X = 0.993

the relative abundance of N-14 = 99.3%

the relative abundance of N-15 = 0.7%

So, according to the above explanation N-14 is abundant

8 0

3 years ago

SrCl2 + 2AgNO3 reaction is what

slava [35]

Answer:

SrCl2 + 2AgNO3 ----> Sr(NO3)2 + 2AgCl (solid)

Explanation:

SrCl2 + 2AgNO3 ----> Sr(NO3)2 + 2AgCl (solid)

4 0

4 years ago

which words best describe the following characteristic? 69.2 kg of a substance? a. extensive, quantitative b. intensive, qualita

marshall27 [118]

The correct answer is A. Extensive, quantitative

Explanation:

A property is classified as extensive if it varies with the amount of the substance; this applies to mass, which is measured in grams or kilograms, because depending on the size of the sample the mass changes, therefore "69.2 kg" is an extensive characteristic. Besides this, quantitative characteristics or properties are those that can be measured through numbers; this also applies to mass because a specific number of grams or kilograms shows the exact mass in the substance, in this case, the value is 69.2 kg. Thus, this characteristic is both extensive and quantitative.

4 0

3 years ago

Read 2 more answers

What does it mean if an experiment is replicable ? Why is it important that experiment be replicable

Murljashka [212]

Answer:

When an experiment is replicanle it means it is able to be done again.

Explanation:

It is important because You need to see if you get different results or if you messed up the first time

3 0

3 years ago

I have no idea how to do this

alexandr402 [8]

<span>It is known that amu is equal to the molar mass of 1 mole of substance. Therefore,
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Weight of one mole of uranium = 238 g/mol

The molar mass or molecular weight for U205 is 556 g/mol.
(238 x 2) + (16 x 5) = 556 g/mol

7 0

4 years ago

Read 2 more answers