Modern Periodic Table — Practice Quiz
Maharashtra Board · Class 11 · Chemistry
Try a 4-question quiz on Modern Periodic Table for Maharashtra Board Class 11 Chemistry: tap an answer to check it and see why.
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Quick Quiz: Modern Periodic Table
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Who proposed the modern periodic law?
How many groups are present in the modern periodic table?
The period number in the periodic table represents:
Which block contains the transition elements?
Sample Questions
Which of the following elements belong to the s-block?
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Lithium (Li), Magnesium (Mg), Sodium (Na)
s-block elements include groups 1 and 2, where the last electron enters the s-orbital. Li, Mg, and Na belong to groups 1 and 2.
As we move across a period from left to right, atomic radius:
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Decreases
Atomic radius decreases across a period due to increasing effective nuclear charge, which pulls electrons closer to the nucleus.
Which of the following properties increase down a group?
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Atomic radius, Metallic character, Number of electron shells
Down a group, atomic radius, metallic character, and number of electron shells increase due to addition of new shells and decreased effective nuclear charge.
The general electronic configuration of Group 17 elements is:
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ns² np⁵
Group 17 elements (halogens) have the general electronic configuration ns² np⁵, with 7 valence electrons.
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