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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
Write the names of following elements Na, C, Kr, U, Ra, Fe, Co.
The symbol of a metal element which is used in making thermometers is :
Explain the terms 'valency' and 'variable valency'.
State the type of element for the following:
Silicon
State the type of element for the following:
Aluminium
Give the symbol of the following element:
Carbonate
Write the chemical formula of the following:
Sodium bromide
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Silver
write symbol with the variable valency
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Lead
write symbol with the variable valency
Write the symbols for the following elements.
- Oxygen
- Gold
- Calcium
- Cadmium
- Iron
