trivalent metal meaning in Hindi

Examples

1. With trivalent metal ions, alums such as ferric ammonium sulfate are formed.
2. Alums are double sulfate salts, with the formula, where A is a trivalent metal ion such as aluminium.
3. That is, they bind tightly to di-and trivalent metal ions, which is useful in water softening.
4. In 1975, Johansson and Rosengren examined the measured and predicted values for the enthalpies of crystallization ) of the metallic lanthanides and actinides, both as divalent and trivalent metals.
5. During extraction of indium, a sulfate solution of mixed metals, including indium sulfate, has trivalent metals partitioned into a kerosene solution of di-2-ethylhexyl hydrogen phosphate.
6. The only alums formed with common trivalent metals are NaAl ( SO 4 ) 2 ( unstable above 39 �C ) and NaCr ( SO 4 ) 2, in contrast to potassium sulfate and ammonium sulfate which form many stable alums.
7. While each MOF described has its advantages, none of these MOFs reach all of the standards set by the U . S . DOE . Therefore, it is not yet known whether materials with high surface areas, small pores, or di-or trivalent metal clusters produce the most favorable MOFs for hydrogen storage.
8. A pseudo alum is a double sulfate of the typical formula, where " A " is a divalent metal ion, such as cobalt ( wupatkiite ), manganese ( apjohnite ), magnesium ( pickingerite ) or iron ( halotrichite or feather alum ), and " B " is a trivalent metal ion.