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When atomic SULPHUR forms the bond with another atom (or atoms) in which it becomes the ion SULPHIDE, it accepts two electrons from the outer shell of the other atom(s); giving it a relative negative charge. Examples are Iron (II) [old name Ferrous] Sulphide - FeS - or Potassium Sulphide - K2S [ionic potassium has a single positive charge - it donates a single electron when it forms an ionic bond].

(U.K. Sulphur/sulphide = U.S. Sulfur/sulfide!)

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βˆ™ 14y ago
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βˆ™ 13y ago

The Sulfide ion, S2-, has a 2- charge because a lone atom of sulfur has 6 outer shell electrons, but it is more stable to have 8 outer shell electrons. So sulfur may gain 2 electrons (electrons have a -1 charge) to achieve this full outer shell.

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βˆ™ 13y ago

A lone neutral sulfur atom (S) has six outer shell electrons. However, this is not a particularly stable configuration.

The most stable configuration would be an outer shell of 8 electrons. To achieve this setup a sulfur atom may take two additional electrons from some other substance, typically a metal. Since each electron carries a 1- charge the overall charge of the ion will be 2-.

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βˆ™ 14y ago

This is the most stable monatomic ion of oxygen, because it makes the oxide ion isoelectronic with the noble gas neon.

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βˆ™ 10y ago

Because of the Mayan calendar.

I hope my professional opinion helped!

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βˆ™ 11y ago

because it has a -2 charge

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Q: Why does a sulphide ion has -2 charge?
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