Free Shapes of Orbitals MCQs with Answers
22 Shapes of Orbitals MCQs from Chemistry, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Atomic orbitals are three-dimensional regions where an electron is most likely to be found, not fixed circular paths. The content covers the spherical s orbitals, dumbbell-shaped p orbitals, clover-shaped d orbitals, the orientations of orbitals, and how quantum numbers determine their shapes and energy levels.
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- A. spherical
- B. dumbbell shaped
- C. doughnut shaped
- D. tetrahedral
Explanation: A p orbital has two lobes on opposite sides of the nucleus with a node at the nucleus itself, giving the familiar dumbbell shape, and the…
Correct answer: dumbbell shaped- A. 3
- B. 5
- C. 7
- D. 1
Explanation: The number of orbitals in a subshell is 2l plus 1, and for a d subshell l equals 2, giving five orbitals that together hold up to ten…
Correct answer: 5- A. the electron density is maximum
- B. the probability of finding the electron is zero
- C. the nucleus is located
- D. two orbitals overlap
Explanation: The wave function passes through zero at a node, so the electron is never found there, and the number of nodes increases with the…
Correct answer: the probability of finding the electron is zero- A. n
- B. l
- C. m
- D. s
Explanation: The azimuthal quantum number l fixes the subshell and therefore the shape, with l equal to 0 giving a spherical s orbital and l equal to 1…
Correct answer: l- A. mono dentate
- B. Bi dentate
- C. tri dentate
- D. Poly dentate
Explanation: Ethylenediamine, H2NCH2CH2NH2, has two nitrogen donor atoms, and each nitrogen can donate a lone pair to the same metal ion.
Correct answer: Bi dentate- A. S
- B. P
- C. d
- D. f
Explanation: An s orbital has the greatest penetration because its electron-density distribution allows it to approach the nucleus most closely.
Correct answer: S- A. Orbital
- B. Orbit is elliptical
- C. subshell
- D. Electron cloud
Explanation: An orbital is a region around the nucleus where the probability of finding an electron is high.
Correct answer: Orbital- A. Principal of quantum number
- B. Azimuthal quantum number
- C. Magnetic quantum number
- D. Spin quantum number
Explanation: The azimuthal quantum number, l, determines the subshell and therefore the shape of an orbital: s is spherical, p is dumbbell-shaped, and…
Correct answer: Azimuthal quantum number- A. Atomicity
- B. Shape of molecule
- C. Both A and B
- D. Difficult to predict
Explanation: Molecular size is affected by the number of atoms present, called atomicity, and by how those atoms are arranged in space.
Correct answer: Both A and B- A. Electron
- B. Electronic cloud
- C. Proton cloud
- D. Energy
Explanation: This answer is incorrect because electrons are indeed already present within orbitals, using "electron" as an alternative name for…
Correct answer: Electronic cloud- A. Field
- B. Axis
- C. Zone
- D. Atomic orbital
Explanation: This answer is incorrect because the term "field" often refers to a region in which a physical quantity, such as an electric or magnetic…
Correct answer: Atomic orbital- A. 99%
- B. 94%
- C. 95%
- D. 80%
Explanation: This answer is incorrect because, The chance of finding an electron in a specific region within an atom is not described as a fixed…
Correct answer: 95%- A. 1
- B. 2
- C. 3
- D. 4
Explanation: Each orbital holds two electrons which differ in a property known as spin. In other words, an orbital is an area where the electrons live.
Correct answer: 2- A. Dumbbell
- B. Spherical
- C. Trigonal
- D. None of the above
Explanation: The P orbital's dumbbell shape arises from its electron density distribution, with two lobes positioned along an axis and a node at the…
Correct answer: Dumbbell- A. spherical
- B. dumb-bell shaped
- C. double dumb-bell shaped
- D. irregular
Explanation: A p orbital has two lobes on either side of the nucleus with a node at the nucleus itself, giving the familiar dumb-bell shape.
Correct answer: dumb-bell shaped- A. Nucleus
- B. Atom
- C. Orbital
- D. Nodal plane
Explanation: OPTION A: The nucleus of an atom is the central region of an atom where the majority of the mass is concentrated.
Correct answer: Orbital- A. Nucleus
- B. Atom
- C. Orbital
- D. Nodal plane
Explanation: An orbital is a three dimensional description of the most likely location of an electron around an atom.
Correct answer: Orbital- A. Nucleus
- B. Atom
- C. Orbital
- D. Nodal plane
Explanation: The 'Nodal plane' is a region around the nucleus of an atom, where the probability of coming across an electron is zero or nigh zero.
Correct answer: Nodal plane- A. Nucleus.
- B. Atom.
- C. Orbital.
- D. Nodal Plane.
Explanation: The region where the probability of finding electrons is maximum is called the orbital.
Correct answer: Orbital.- A. Nodal
- B. Antinodal
- C. Non nodal
- D. Erect
Explanation: "Nodal" plane is a plane that passes through a nucleus where the probability of finding an electron between s-orbital is zero.
Correct answer: NodalShapes of Orbitals MCQs: common questions
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There are 22 Shapes of Orbitals MCQs in the Chemistry bank, shown 20 to a page with the correct answer and an explanation on each.
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