Chemistry · JEE

Medium Classification of Elements and Periodicity in Properties MCQs for JEE

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Q1ChemistryUnit 9: Classification of Elements and Periodicity in Properties
Due to diagonal relationship between Be and AlA l :
Q2ChemistryUnit 9: Classification of Elements and Periodicity in Properties
Assertion Metallic character increases from left to right in a period. Reason The higher the value of ionization energy, electronegativity and electron affinity the more is the metallic character of the element.
Q3ChemistryUnit 9: Classification of Elements and Periodicity in Properties
Sodium forms Na+N a^{+} ion but it doesnot form Na2+N a^{2+} because of
Q4ChemistryUnit 9: Classification of Elements and Periodicity in Properties
Pure silicon doped with phosphorus is :
Q5ChemistryUnit 9: Classification of Elements and Periodicity in Properties
In Newlands' table, which of the following elements was not placed in the same group in which cobalt and nickel were present?
Q6ChemistryUnit 9: Classification of Elements and Periodicity in Properties
Identify the position of the elements having outer electronic configuration ns2np5n s^{2} n p^{5} for n=3n=3
Q7ChemistryUnit 9: Classification of Elements and Periodicity in Properties
The element having the least size from the following is :
Q8ChemistryUnit 9: Classification of Elements and Periodicity in Properties
Only those elements of s-block can produce superoxides which have :

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