{
  "id": "ba833ac3-dca5-50ae-b0c3-af26025d78fc",
  "slug": "s2-2-the-covalent-model-hl",
  "title": "S2.2 The covalent model (HL)",
  "course": "IB Chemistry",
  "level": "HL",
  "syllabusCode": "S2.2",
  "questionCount": 14,
  "page": "https://splycr.com/ib-chemistry/s2-2-the-covalent-model-hl",
  "data": "https://splycr.com/library/s2-2-the-covalent-model-hl.json",
  "play": "https://splycr.com/?set=ba833ac3-dca5-50ae-b0c3-af26025d78fc",
  "section": {
    "name": "Structure 2: Models of bonding and structure",
    "page": "https://splycr.com/ib-chemistry/models-of-bonding-and-structure"
  },
  "source": {
    "name": "Biology by Bradford",
    "href": "https://www.biologybybradford.com",
    "note": "Written for the splycr library by Biology by Bradford."
  },
  "questions": [
    {
      "number": 1,
      "question": "Molecular geometry of SF₆?",
      "answer": "Octahedral",
      "wrongOptions": [
        "Trigonal bipyramidal",
        "Square planar",
        "Square pyramidal"
      ]
    },
    {
      "number": 2,
      "question": "Molecular geometry of PCl₅?",
      "answer": "Trigonal bipyramidal",
      "wrongOptions": [
        "Octahedral",
        "Square pyramidal",
        "Tetrahedral"
      ]
    },
    {
      "number": 3,
      "question": "Molecular geometry of XeF₄?",
      "answer": "Square planar",
      "wrongOptions": [
        "Tetrahedral",
        "Octahedral",
        "Seesaw"
      ]
    },
    {
      "number": 4,
      "question": "Molecular geometry of SF₄?",
      "answer": "Seesaw",
      "wrongOptions": [
        "Tetrahedral",
        "Square planar",
        "Trigonal pyramidal"
      ]
    },
    {
      "number": 5,
      "question": "Hybridisation of each carbon in ethene?",
      "answer": "sp²",
      "wrongOptions": [
        "sp",
        "sp³",
        "sp³d"
      ]
    },
    {
      "number": 6,
      "question": "Hybridisation of each carbon in ethyne?",
      "answer": "sp",
      "wrongOptions": [
        "sp²",
        "sp³",
        "sp³d"
      ]
    },
    {
      "number": 7,
      "question": "Hybridisation of nitrogen in NH₃?",
      "answer": "sp³",
      "wrongOptions": [
        "sp²",
        "sp",
        "sp³d"
      ]
    },
    {
      "number": 8,
      "question": "Covalent bond formed by sideways overlap of p orbitals?",
      "answer": "Pi bond",
      "wrongOptions": [
        "Sigma bond",
        "Coordination bond",
        "Hydrogen bond"
      ]
    },
    {
      "number": 9,
      "question": "Numbers of sigma and pi bonds in ethyne, H–C≡C–H?",
      "answer": "3 σ, 2 π",
      "wrongOptions": [
        "2 σ, 3 π",
        "5 σ, 0 π",
        "3 σ, 1 π"
      ]
    },
    {
      "number": 10,
      "question": "Formal charge on nitrogen in NH₄⁺?",
      "answer": "+1",
      "wrongOptions": [
        "0",
        "−1",
        "+4"
      ]
    },
    {
      "number": 11,
      "question": "The preferred Lewis structure has formal charges…?",
      "answer": "Closest to zero",
      "wrongOptions": [
        "Furthest from zero",
        "All negative",
        "Equal to group numbers"
      ]
    },
    {
      "number": 12,
      "question": "Describing a molecule by two or more Lewis structures with delocalised electrons?",
      "answer": "Resonance",
      "wrongOptions": [
        "Isomerism",
        "Hybridisation",
        "Tautomerism"
      ]
    },
    {
      "number": 13,
      "question": "Bond order of each C–O bond in CO₃²⁻?",
      "answer": "1.33",
      "wrongOptions": [
        "1.5",
        "2",
        "1"
      ]
    },
    {
      "number": 14,
      "question": "Delocalisation in benzene makes all six carbon–carbon bonds…?",
      "answer": "Equal in length",
      "wrongOptions": [
        "Alternately long and short",
        "Single bonds",
        "Double bonds"
      ]
    }
  ]
}