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प्रश्न
State the type of element for the following:
Copper
विकल्प
Metal
Non-metal
Metalloid
Noble gas
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उत्तर
Metal
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संबंधित प्रश्न
Explain the significance of the symbol H.
The symbols of the elements cobalt, aluminium, helium and sodium respectively written by a student are as
follows. Which symbol is the correct one ?
What do the following symbol stand for?
H
Give the symbol and the number of atoms of the following elements present in carbon dioxide.
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:
Carbon
State the type of element for the following:
Calcium
Write the radical of the following valency:
Hydroxide
Write the chemical formula of the following:
calcium sulphide
Give the formula of the following gas:
Nitric oxide
