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Question: Answered & Verified by Expert
"Metals are usually not found as nitrates in their ores".
Out of the following two (a and b) reasons which is or are true for the above observation?
(a)  Metal nitrates are highly unstable.
(b) Metal nitrates are highly soluble in water.
ChemistryGeneral Principles and Processes of Isolation of MetalsNEETNEET 2015 (Phase 1)
Options:
  • A a and b are true
  • B a and b are false
  • C a is false but b is true
  • D a is true but b is false
Solution:
1479 Upvotes Verified Answer
The correct answer is: a is false but b is true
Metals are usually not found as nitrates in their ores, because metal nitrates are highly soluble in water. 

The nature anion ( N O 3 ) has three equivalent oxygen surrounding a central nitrogen atom. This tends to spread the single negative charge and make it easier for water to separate the ions in solution.

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