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प्रश्न
State the type of element for the following:
Boron
विकल्प
Metal
Non-metal
Metalloid
Noble gas
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उत्तर
Metalloid
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संबंधित प्रश्न
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:
Arsenic
State the type of element for the following:
Antimony
State the most reactive and the least reactive metal from the following – Zn, Ag, Na, Fe, Cu, Pb.
Give the formula of the following gas:
Nitrous oxide
State the valency of the following metallic element and write symbol with the valency
Aluminium
What is meant by the term ‘symbol’?
Name three metals whose symbols are derived: from their Latin names.
Describe the different ways in which we can write the symbols of elements. Give appropriate examples.
Define Alchemy.
