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प्रश्न
Give two example of group 18 elements.
उत्तर
Neon (Ne) and argon (Ar) are two elements of group 18.
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संबंधित प्रश्न
Fill in the following blank with suitable word:
Group 18 elements are called ...............
What is meant by a period, in a periodic table?
What is the name of those elements which divide metals and non-metals in the periodic table?
Is it possible to have an element having atomic number 1.5 placed between hydrogen and helium?
(b) What is the number of elements is 3rd period, the modern periodic table?
Give the symbol and valency of the following element and radical.
Potassium
Give the symbol and valency of the following element and radical.
Hydrogen
Give the symbol and valency of the following element and radical.
Bisulphate
Give the symbol and valency of the following element and radical.
Sulphate
______ is the longest period in the periodical table.
