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  1. Problems
  2. /Structure of the Atom

Structure of the Atom

Chemistry
+ Upload a Problem
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67 problems
Type:
1.
Write the electron configurations of V²⁺, Co³⁺, Cu⁺ and Mn²⁺.
High School (11–12) · Electronic Configuration and Valency, Quantum Mechanical Model of the AtomStemPy LabStemPy Lab
Medium
2.
By the usual order of filling, copper should be [Ar] 3d⁹ 4s².
High School (11–12) · Electronic Configuration and Valency, Quantum Mechanical Model of the AtomStemPy LabStemPy Lab
Medium
3.
Write the electron configurations of silicon (Z = 14), vanadium (Z = 23) and manganese (Z = 25)…
High School (11–12) · Electronic Configuration and Valency, Quantum Mechanical Model of the AtomStemPy LabStemPy Lab
Easy
4.
Use the (n + l) rule to put the orbitals 7s, 5f, 6d, 7p and 4f in the order in which they fill.
High School (11–12) · Quantum Mechanical Model of the AtomStemPy LabStemPy Lab
Medium
5.
In a hydrogen atom, the 3s, 3p and 3d orbitals have the same energy.
High School (11–12) · Quantum Mechanical Model of the AtomStemPy LabStemPy Lab
Medium
6.
Find the number of radial nodes, angular nodes and total nodes of the orbitals 5p, 5d and 6s.
High School (11–12) · Quantum Mechanical Model of the AtomStemPy LabStemPy Lab
Medium
7.
Say which of these sets of quantum numbers (n, l, ml, ms) are not allowed, and why.
High School (11–12) · Quantum Mechanical Model of the AtomStemPy LabStemPy Lab
Medium
8.
Write all the allowed values of l and ml for the shell with n = 2.
High School (11–12) · Quantum Mechanical Model of the AtomStemPy LabStemPy Lab
Easy
9.
Give two reasons, one from de Broglie and one from Heisenberg, why we cannot say that an electron…
High School (11–12) · Quantum Mechanical Model of the AtomStemPy LabStemPy Lab
Medium
10.
The position of an electron is known to within 25 pm.
High School (11–12) · Quantum Mechanical Model of the AtomStemPy LabStemPy Lab
Medium
11.
A tennis ball of mass 0.058 kg moves at 50 m s⁻¹.
High School (11–12) · Quantum Mechanical Model of the AtomStemPy LabStemPy Lab
Medium
12.
An electron and a proton each move at 3.0 × 10⁶ m s⁻¹.
High School (11–12) · Quantum Mechanical Model of the AtomStemPy LabStemPy Lab
Easy
13.
Find the energy needed to remove the electron from B⁴⁺, with Z = 5, in its ground state.
High School (11–12) · Light, Atomic Spectra and the Bohr ModelStemPy LabStemPy Lab
Medium
14.
The ion He⁺ has one electron. Find the wavelength of the photon given out when its electron falls…
High School (11–12) · Light, Atomic Spectra and the Bohr ModelStemPy LabStemPy Lab
Hard
15.
For the electron in the n = 4 orbit of a hydrogen atom, find these.
High School (11–12) · Light, Atomic Spectra and the Bohr ModelStemPy LabStemPy Lab
Medium
16.
One student heats hydrogen gas at low pressure and sees a few bright lines.
High School (11–12) · Light, Atomic Spectra and the Bohr ModelStemPy LabStemPy Lab
Easy
17.
Find the shortest wavelength of the Brackett series, which ends on n₁ = 4, and the energy of a…
High School (11–12) · Light, Atomic Spectra and the Bohr ModelStemPy LabStemPy Lab
Medium
18.
Find the wavelength of the line of hydrogen produced when an electron falls from n = 5 to n = 4.
High School (11–12) · Light, Atomic Spectra and the Bohr ModelStemPy LabStemPy Lab
Medium
19.
Light of wavelength 250 nm and power 2.0 mW falls on potassium, with a work function of 2.30 eV.
High School (11–12) · Light, Atomic Spectra and the Bohr ModelStemPy LabStemPy Lab
Hard
20.
Light above the threshold frequency falls on a metal, and electrons come out.
High School (11–12) · Light, Atomic Spectra and the Bohr ModelStemPy LabStemPy Lab
Medium
21.
The threshold wavelength of a metal is 540 nm.
High School (11–12) · Light, Atomic Spectra and the Bohr ModelStemPy LabStemPy Lab
Medium
22.
A green laser pointer has a power of 5.0 mW and a wavelength of 532 nm.
High School (11–12) · Light, Atomic Spectra and the Bohr ModelStemPy LabStemPy Lab
Medium
23.
Arrange these in order of increasing frequency: microwaves, X-rays, visible light, radio waves…
High School (11–12) · Light, Atomic Spectra and the Bohr ModelStemPy LabStemPy Lab
Easy
24.
A sodium lamp gives out yellow light of wavelength 589 nm.
High School (11–12) · Light, Atomic Spectra and the Bohr ModelStemPy LabStemPy Lab
Easy
25.
Rubidium has two isotopes, ⁸⁵Rb and ⁸⁷Rb.
High School (11–12) · Isotopes and Isobars, Subatomic Particles and Atomic ModelsStemPy LabStemPy Lab
Medium
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