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MHT-CET Elements of Groups 16, 17 and 18 — practice questions — page 2

Explore 86 free Elements of Groups 16, 17 and 18 questions in MHT-CET Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Elements of Groups 16, 17 and 18 questions and exercises with answers

Showing questions 31–60 of 86.

Which halogens show +1, +3, +5 and +7 oxidation states?Read the answer and worked solution →Noble gases are described as zero valent because they do what?Read the answer and worked solution →The hydrides H2E of Group 16 have which shape?Read the answer and worked solution →From H2O to H2Te, thermal stability of the hydrides does what?Read the answer and worked solution →Which Group 16 hydride lacks reducing property?Read the answer and worked solution →Which oxide is a reducing agent, while TeO2 acts as an oxidising agent?Read the answer and worked solution →Of the two fluorine oxides, which one is thermally stable at 298 K?Read the answer and worked solution →Which chlorine oxide is used to bleach paper pulp and textiles?Read the answer and worked solution →I2O5 is used for the estimation of which gas?Read the answer and worked solution →Which halogen oxides are the least stable of all halogen oxides?Read the answer and worked solution →SF6 is octahedral with which hybridisation of sulfur?Read the answer and worked solution →Stability of halides of Group 16 elements decreases in which order?Read the answer and worked solution →Xenon fluorides XeF2, XeF4 and XeF6 are described as what?Read the answer and worked solution →Which halide among metal halides is the most ionic?Read the answer and worked solution →Which two forms of oxygen are its allotropes?Read the answer and worked solution →Which sulfur allotrope is stable above 369 K?Read the answer and worked solution →Another name for alpha sulfur is what?Read the answer and worked solution →Which selenium allotrope is metallic and a photoconductor?Read the answer and worked solution →What is the shape of the S8 ring in rhombic sulfur?Read the answer and worked solution →The cyclo-S6 ring adopts which conformation?Read the answer and worked solution →Among chlorine oxoacids, which one is the strongest acid?Read the answer and worked solution →What is the formula of pyrosulfuric acid?Read the answer and worked solution →Which acid is peroxy monosulfuric acid?Read the answer and worked solution →Industrially, dioxygen is obtained from air by what process?Read the answer and worked solution →Which pair of metals does dioxygen not directly react with?Read the answer and worked solution →How many stable isotopes does oxygen have?Read the answer and worked solution →At about what temperature does dioxygen liquefy?Read the answer and worked solution →Which oxide is acidic in nature?Read the answer and worked solution →Which oxide is classified as neutral?Read the answer and worked solution →An oxide that reacts with both acids and bases to form salts is called what?Read the answer and worked solution →

Worked practice questions

Which halogens show +1, +3, +5 and +7 oxidation states?

  1. F, Br and I
  2. Cl, Br and I
  3. F, Cl and Br
  4. F and I only
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Correct answer: B. Cl, Br and I

Cl, Br and I have empty d orbitals and are less electronegative than F, so they expand the octet.

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Noble gases are described as zero valent because they do what?

  1. Share electrons in pairs
  2. Gain or lose no electrons
  3. Lose electrons readily
  4. Gain electrons readily
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Correct answer: B. Gain or lose no electrons

Their filled ns2np6 shells give no tendency to gain or lose electrons.

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The hydrides H2E of Group 16 have which shape?

  1. Tetrahedral
  2. Angular (bent)
  3. Trigonal planar
  4. Linear form
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Correct answer: B. Angular (bent)

The central atom is sp3 hybridised with two lone pairs, giving an angular shape.

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More Chemistry topics

ElectrochemistrySolutionsCoordination CompoundsChemical KineticsChemical Bonding and Molecular StructureAldehydes, Ketones and Carboxylic AcidsHydrocarbonsStructure of Atom