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प्रश्न
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 ________.
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उत्तर
From the elements – He, Br, Pt and O; the element which forms a polyatomic molecule is O and which is liquid at room temperature is Br.
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संबंधित प्रश्न
The anion of an element has ______.
Explain the terms 'valency' and 'variable valency'.
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’
Give the symbol and the number of atoms of the following elements present in carbon dioxide.
State which element exists in the highest percentage in atmosphere.
Give the symbol of the following element:
Potassium
Give the symbol of the following element:
Fluorine
State the type of element for the following:
Lead
Write the radical of the following valency:
Aluminium
Mass of one atom of oxygen is
