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प्रश्न
State the type of element for the following:
Oxygen
विकल्प
Metal
Non-metal
Metalloid
Noble gas
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उत्तर
Non-metal
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संबंधित प्रश्न
The formula of the sulphate of an element X is X2(SO4)3. The formula of nitride of element X will be :
Out of ozone, phosphorus, sulphur and krypton, the elements having the lowest and highest atomicities are respectively :
Match the formulas of the following of acids with their correct names:
Acids – (a) HCI (b) HNO3 (c) H2SO4 (d) H2CO3
Names – (1) Carbonic acid (2) Sulphuric acid (3) Hydrochloric acid (4) Nitric acid
Elements are mainly classified into metals and non-metals. State six properties of metals which differ from non-metals.
Give the symbol of the following element:
Mercury
Give the symbol of the following element:
Arsenic
State a reason why the symbol of calcium is ‘Ca’ and of copper is ‘Cu’
State the valency of the following metallic element and write symbol with the valency
Aluminium
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).
Bromide
What is the expansion of IUPAC.
