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slamgirl [31]
3 years ago
15

What is the total number of electrons in a S2– ion? (1) 10 (3) 16 (2) 14 (4) 18

Chemistry
2 answers:
jeka57 [31]3 years ago
4 0
Sulfur normally has 16 electrons (see the periodic table), but the 2- indicates that the atom is gaining 2 electrons. because of that, the answer would be 18.
hope this helped!
NikAS [45]3 years ago
4 0

Answer:  (4) 18

Explanation: S^{2-} is an anion formed when neutral sulfur atom gains two electrons.

Sulfur (S) is an element with atomic number of 16. Thus it contains 16 electrons.

S: 1s^22s^22p^63s^23p^4

It gains two electrons, the number of electrons increase to 18 and attain a stable configuration.

S^{2-}:1s^22s^22p^63s^23p^6

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Answer:

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2 years ago
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Answer:

The Na_{2}CO_{3} solution has a higher osmotic pressure and higher boiling point than LiCl solution.

Explanation:

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where \Delta P, \Delta T_{b} and \pi are lowering of vapor pressure, elevation in boiling point and osmotic pressure of solution respectively. i is van't hoff factor.

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Here both Na_{2}CO_{3} and LiCl are strong electrolytes.

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Explanation:

5 0
3 years ago
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