Respuesta :

Answer:

Explanation:

For  

32

S

2

−

, there are 16 protons, 18 electrons, and 16 neutrons.

Explanation:

The atomic number,  

Z

, specifies the number of protons, positively charged, massive, fundamental particles present in the sulfur nucleus. This number defines the sulfur atom as a sulfur atom (i.e if there were 17 protons, the atom would be chlorine).

For a neutral atom, if there are 16 positive nuclear charges, there must necessarily be 16 negatively charged particles, 16 electrons, whizzing about the nucleus.

Because electrons have negligible mass, to account for the mass of the isotope, there must be 16 neutrons, 16 neutrally charged, massive, fundamental particles present in the sulfur nucleus.

And thus finally, if we have the  

32

S

2

−

ion, there are 18 electrons, 16 protons, and 16 neutrons.

An atom can be defined by its properties:  

  • Atomic number (Z): It is equal to the number of protons present in a neutral atom.
  • Mass number (A): It is equal to the sum of the number of protons and the number of neutrons.

An isotope is represented by the general notation of [tex]_Z^A\textrm{X}[/tex], where X is the symbol of an element.

For the given isotopic specie, [tex]_{16}^{34}\textrm{S}^{-2}[/tex], mass number is 34 and atomic number is 16.

Number of neutrons = Mass number - Atomic number

Put the value in the above formula.

[tex]\Rightarrow \text{Number of neutrons}=34-16\\\\\Rightarrow \text{Number of neutrons}=18[/tex]

So, the correct option is (G).

Learn more about neutrons in an atom here: https://brainly.com/question/19958244

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