which of the following pairs of metal exist in their free state in nature a g and h g a g n j a u n h t a u n a a g
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Answer:
not so good question..........
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Out of these pairs :
(a)Ag and Hg
(b)Ag and Zn
(c)Au and Hg
(d)Au and Ag
That occur in free state is --> (d)
Explanation:
The Elements occur in nature in free as well as in combined state .
Their occurrence depends upon the chemical reactivity of elements .
- If the element is quite reactive then it occurs usually in combined forms like in form of ores .
For example : Aluminium occurs as Bauxite ore etc
- If the element is not that reactive then it occurs usually in free state .
If we consider the reactivity series , we see that Cu, Hg, Ag , Au and Pt are less reactive .
Out of this , Au and Ag and Pt are found in free state because they have least reactivity .
That is the reason in above asked question option (d) is a correct option .
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