Telluride (chemistry)

The telluride ion is Te2&minus;. It is the final stable member of the series of dianions O2&minus;, S2&minus;, and Se2&minus;.

Tellurides also describe a class of compounds formally derived from Te2&minus;; i.e., their electronic structure is reasonably well approximated by considering the tellurium atom as having an octet configuration. Using this approach, Ag2Te is derived from Ag+.

Examples:
 * hydrogen telluride, H2Te
 * sodium telluride, Na2Te

See category for a list.

Discussion
In aqueous solution, Te2&minus; exists only at high pH. In neutral conditions, hydrogen telluride ion, HTe&minus;, is prevalent. In acid conditions, hydrogen telluride, H2Te, forms.