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WorksheetsQuizizz100: Atomic Structure #1
Total questions: 13
Worksheet time: 3hrs 15mins
How many electronic transitions are possible between the first five energy levels of a hydrogen atom?
5
8
10
12
Which of the following is a statement of Planck's quantum theory?
An orbital can accommodate a maximum of two electrons of opposite spins only.
Electronic transition is accompanied by the emission of electromagnetic radiations.
Electrons can be excited to higher energy levels by absorbing extra energy.
Radiant energy can be absorbed or emitted in fixed amounts only.
Consider the first six energy levels of a hydrogen atom. How many electronic transitions corresponding to the Lyman Series and Balmer series are possible?
Lyman series = 5; Balmer series = 4
Lyman series = 4; Balmer series = 5
Lyman series = 3; Balmer series = 4
Lyman series = 6; Balmer series = 6
The proton number of an element X is 28. The Y2+ ion is isoelectronic with X. Which of the following combination is correct?
Y2+ = 1s22s22p63s23p63d10
X = 1s22s22p63s23p63d10
Y = 1s22s22p63s23p63d10
X2+ = 1s22s22p63s23p63d10
How many degenerate orbitals does a d-sub shell contain?
1
3
5
7
Which of the following statements is true regarding the line spectrum of hydrogen?
The first line in each series has the longest wavelength.
The ionisation energy of hydrogen can be calculated using the line with the lowest frequency in the ultra-violet region.
The lines are all equally spaced.
The lines converge when the wavelength increases.
What kind of orbital must an electron with the principal quantum number n = 3 occupy?
An s-orbital
A p-orbital
A d-orbital
Either an s, a p orbital or a d orbital
Which of the following statements explains why emission spectrum of hydrogen is a line spectrum?
The hydrogen has only one electron.
The lone electron in the hydrogen atom can revolve around the nucleus in fixed orbits only.
The energy levels in the hydrogen atom are quantised.
Electrons have dual nature.
In a hydrogen atom, an electron which orbital that has can absorb energy but cannot emit energy?
1s
2p
3s
3d
Which of the following species has 1 proton and 2 electrons only?
1H
1H-
2H-
2H+
Electrons occupying the same orbital must have opposite spin. This statement refers to...
the Aufbau Principle.
Hund's rule.
Pauli's exclusion principle.
the quantum theory.
Which of the following statements is correct?
Electrons can revolve round the nucleus in fixed orbits only.
All atoms contain protons, neutrons and electrons.
A positive ion is formed when an atom accepts a proton.
No two electrons in an atom have identical quantum numbers.
Which one of the following statements is true of the hydrogen spectrum?
Each series consists of the same number of lines.
The last line in each series has the shortest wavelength.
The lines converge as the wavelength increases.
The lines are all coloured.
