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Atomic Structure

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

The nuclear atom

Subtopic

The nuclear atom under Atomic Structure for Grade 12 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which subatomic particle's discovery proved that atoms were not indivisible?

    A.

    Proton

    B.

    Neutron

    C.

    Electron

    D.

    Alpha particle

  2. 2.

    What is the atomic number of an atom with 20 protons and 20 neutrons?

    A.

    20

    B.

    40

    C.

    0

    D.

    40.08

  3. 3.

    Which isotope of Carbon is used as the standard for the unified atomic mass unit?

    A.

    Carbon-11

    B.

    Carbon-12

    C.

    Carbon-13

    D.

    Carbon-14

Download the worksheet for Atomic Structure - The nuclear atom to practice offline. It includes additional chapter-level practice questions.

Electron configuration

Subtopic

Electron configuration under Atomic Structure for Grade 12 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Identify the element with the electron configuration [Ar]4s23d104p1[Ar] 4s^{2} 3d^{10} 4p^{1}.

    A.

    Gallium

    B.

    Germanium

    C.

    Aluminum

    D.

    Indium

  2. 2.

    Which of these is the correct electron configuration for the Aluminum ion (Al3+Al^{3+})?

    A.

    1s22s22p63s23p11s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{1}

    B.

    1s22s22p61s^{2} 2s^{2} 2p^{6}

    C.

    1s22s22p63s21s^{2} 2s^{2} 2p^{6} 3s^{2}

    D.

    1s22s22p31s^{2} 2s^{2} 2p^{3}

  3. 3.

    How many electrons are in the 4s4s subshell of a neutral Calcium atom (Z=20Z = 20)?

    A.

    1

    B.

    2

    C.

    0

    D.

    10

Download the worksheet for Atomic Structure - Electron configuration to practice offline. It includes additional chapter-level practice questions.

Electrons in atoms (HL only)

Subtopic

Electrons in atoms (HL only) under Atomic Structure for Grade 12 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    In the visible light spectrum, which color has the lowest energy?

    A.

    Violet

    B.

    Blue

    C.

    Green

    D.

    Red

  2. 2.

    What is the maximum number of electrons that can be held in a 3s3s orbital?

    A.

    1

    B.

    2

    C.

    6

    D.

    8

  3. 3.

    Which electron transition results in the emission of the longest wavelength line in the Lyman series?

    A.

    n=2→n=1n=2 \rightarrow n=1

    B.

    n=3→n=1n=3 \rightarrow n=1

    C.

    n=∞→n=1n=\infty \rightarrow n=1

    D.

    n=3→n=2n=3 \rightarrow n=2

Download the worksheet for Atomic Structure - Electrons in atoms (HL only) to practice offline. It includes additional chapter-level practice questions.

Atomic Structure - IB Grade 12 Chemistry Notes & Revision | Krit.club