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Ga
Pb
Ge
Sn
....... is not acidic.
......... on mixing with water changes to gypsum.
.......... element has two orbits that are completely filled.
"Every matter in the universe is made up of very fine particles", who said this for the first time?
1 Curie of activity is equivalent to
2-Acetoxybenzoic acid is
220 g of carbon dioxide contains .......... moles.
A ‘breath test’ used by traffic police to check drunken driving uses _?
A catalyst
A catalyst remains unchanged at the end of the reaction with regard to