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Question
Name and state the following with reference to the elements of the first three periods of the periodic table.
Group whose elements have zero valencies.
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Solution 1
Noble gases
Solution 2
Group is 18th or O group
RELATED QUESTIONS
What are the following group known as?
Group 17
Name two elements of each group.
Name the method by which alkali metals can be extracted.
Name the gas used in:
Bright colour advertising light works
Give reason:
Alkali and alkaline earth metal compounds usually form electrovalent compounds.
Write a short note on the following type of element –
alkaline earth metals
‘The periodic table contains elements methodically grouped together’.
State the main helpful features of the long form of the periodic table.
Select the correct answer from the options given below.
The most reactive halogen from group 17.
Give a reason for the following:
Noble gases do not form compounds readily.
