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प्रश्न
State the most reactive and the least reactive metal from the following – Zn, Ag, Na, Fe, Cu, Pb.
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उत्तर
It is a series of metals arranged according to their reactivity in which the most reactive metal i.e. potassium is at the top of the series and the least reactive metal i.e. gold is at the bottom.
The most reactive metal is Na.
The less reactive metals are Zn, Fe, Pb.
The least reactive metals are Ag, Cu.
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संबंधित प्रश्न
The formula of the sulphate of an element M is M2(SO4)3
Write the formula of it
Oxide
Match the symbols of – radicals – with their correct combining power or capacity, (valency).
(a) OH
(b) So4
(c) No3
(d) Co3
Combining power or capacity – A : 3; B : 2; C : 1. (negative valencies)
Give the symbol of the following element:
Arsenic
Give the symbol of the following element:
Antimony
State the type of element for the following:
Copper
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Give the formula of the following gas:
Hydrogen chloride
Select the correct answer from the choice in the bracket.
The formula of caustic soda.
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State the variable valency of the following metal.
Mercury
write symbol with the variable valency
Symbol of mercury is
