Chemistry, 10.10.2019 18:00 amorrison10181

Identify the number of neutrons in one atom of sulfur with an atomic mass number of 34 amu.

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Answer from: wwall7

18 neutrons

Explanation:

The atomic number of sulfur is 16.Atomic number indicates the number of protons in the nucleus of an atom.Neutrons are found in the nucleus of an atom together with the protons and account for the difference in the mass number among isotopes of an element.The sum of neutrons and protons gives the atomic mass number of an element.Therefore; given the mass number and the atomic number(number of protons) we can calculate the number of neutrons.

Number of protons = 16

Mass number = 34

Number of neutrons = mass of number - number of protons

= 34 - 16

= 18 neutrons

Answer from: Quest

answer: - 3.) the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.

solution: - as per the rules, oxidation number of oxygen in its compounds is -2. the sum of oxidation numbers of all the elements of a molecule or compound is zero.

also, the oxidation number in elemental form is zero.

in no, the oxidation number of o is -2 so the oxidation number of n is +2 so that the sum is zero.

similarly, the oxidation number of c in co is +2 and o is -2.

on product side the oxidation number of n is 0 as it is in the elemental form( $n_2$ ) .

oxidation number of c in carbon dioxide is +4 as there are two oxygen in it and we know that each oxygen is -2.

so, oxidation number of n is changing from +2 to 0 and the oxidation number of c is changing from +2 to +4.

since nitrogen is reduced and hence no is acting as an oxidizing agent. carbon is oxidized and so co is acting as a reducing agent.

so, the right choice is number 3.)the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.

Answer from: Quest

it is the most commonly accepted one

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Identify the number of neutrons in one atom of sulfur with an atomic mass number of 34 amu.
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