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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
Define: Elements-
The symbol of a metal element which is used in making thermometers is :
Give the names and symbols of the first twenty elements of the periodic table.
Match the symbols of non-metallic elements with their correct combining power or capacity.
(a) O
(b) S
(c) Cl
Combining power or capacity A : 3; B : 2; C : 1. (negative valencies)
State the type of element for the following:
Mercury
State the type of element for the following:
Neon
State the type of element for the following:
Xenon
State the type of element for the following:
Aluminium
Write the radical of the following valency:
Nitrate
Give the formula of the following gas:
Nitric oxide
