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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
Name the elements represented by the following symbols :
Hg, Pb, Au, Ag, Sn
Explain the significance of the symbol H.
Write the formula of the compound formed – given symbols and combining power or capacity (valency) of the following element in the compound.
Ca2+ NO31-
Give the symbol of the following element:
Sodium
State the type of element for the following:
Arsenic
State the type of element for the following:
Antimony
Write the radical of the following valency:
Nitrate
Write the chemical formula of the following:
zinc oxide
State whether the following ion or radical given below of a non-metallic element exhibits valency: 1–, 2– or 3–. (write the ion or radical with the correct valency).
Oxide
The first letter of a symbol is always written as a ______ letter and the second letter as a ______ letter.
