Elements of Groups 16, 17 and 18
Maharashtra Board · Class 12 · Chemistry
Practice quiz for Elements of Groups 16, 17 and 18 — Maharashtra Board Class 12 Chemistry. MCQs and questions with answers to test your preparation.
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Quick Quiz: Elements of Groups 16, 17 and 18
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What is the general electronic configuration of Group 16 elements?
The correct order of acidic strength of hydrogen halides is:
The balanced equation for preparation of SO₂ from sodium sulfite is:
Noble gases are chemically inert because:
Sample Questions
Which of the following are correct about halogens?
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They have ns²np⁵ configuration, They are called salt-forming elements, They are highly reactive, They exist as diatomic molecules
Halogens have ns²np⁵ configuration, are called salt-forming elements (Greek: halo=salt, gene=born), are highly reactive due to high electronegativity, and exist as X₂ molecules. Except F, others show multiple oxidation states.
Oxygen shows anomalous behavior compared to other Group 16 elements due to:
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Small atomic size, High electronegativity, Absence of d-orbitals
Oxygen's anomalous behavior is due to its small size, highest electronegativity after fluorine, and absence of d-orbitals in valence shell which prevents expansion of octet.
Which compound is used as a bleaching agent for paper and textiles?
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ClO₂
Chlorine dioxide (ClO₂) is used as a bleaching agent for paper pulp and textiles due to its strong oxidizing properties without damaging the material.
The shape of ozone (O₃) molecule is:
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Angular
Ozone has angular (bent) structure with O-O-O bond angle of about 117°. It is a resonance hybrid of two canonical forms.
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