Advertisements
Advertisements
प्रश्न
Out of ozone, phosphorus, sulphur and krypton, the elements having the lowest and highest atomicities are respectively :
विकल्प
sulphur and krypton
krypton and ozone
phosphorus and sulphur
krypton and sulphur
Advertisements
उत्तर
krypton and sulphur
Out of ozone, phosphorus, sulphur and krypton, krypton has the lowest atomicity and sulphur the highest .
APPEARS IN
संबंधित प्रश्न
Define: Compounds
Give two examples of the following :
Solid + Solid mixture
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’
State what a chemical formula denotes.
Match the formulas of the following of bases with their correct names.
Bases – (a) NaOH (b) KOH (c) Ca(OH)2 (d) Zn(OH)2
Names – (1) Potassium hydroxide (2) Zinc hydroxide (3) Aluminium hydroxide (4) Calcium hydroxide (5) Sodium hydroxide
Select the correct answer from the choice given below.
The type of element-phosphorus
Write the radical of the following valency:
Sodium
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).
Sulphate
Name three metals whose symbols are derived: from their Latin names.
