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प्रश्न
The pictorial symbol for water given by the alchemists was
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संबंधित प्रश्न
What is the significance of the symbol of an element ? Explain with the help of an example.
The formula of the sulphate of an element M is M2(SO4)3
Write the formula of it
Phosphate
An atom of an element is denoted by a “symbol”. Explain the meaning of the term ‘symbol’. State a reason for representing the following element by its symbol.
Hydrogen by ‘H’
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
State the type of element for the following:
Lead
Write the radical of the following valency:
Chlorine [Chloride]
Give the formula of the following gas:
Nitrogen dioxide
Complete the statement given below by filling in the blanks with the correct words.
From the elements – He, Br, Pt and O; the element which forms a polyatomic molecule is ________ and which is liquid at room temperature is ________.
Which of the following symbols of elements are incorrect? Give their correct symbols
- Cobalt CO
- Carbon c
- Aluminium AL
- Helium He
- Sodium So
What is the significance of the symbol of an element?
