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WorksheetsQuizizz100: Atomic Structure #2
Total questions: 25
Worksheet time: 6hrs 15mins
What is the total number of atomic orbitals in an atom with the highest principal quantum number n = 3?
14
3
13
18
What is the maximum number of electrons that can be accommodated in the atomic orbitals of the shell of n = 3?
18
8
10
32
The electronic configuration of an element X is ...3s23p63d104s24p3. This means that the element X is...
a Group 15 element
a Group 14 element
a Group 5 element
a d-block element
When a copper compound is heated strongly in a Bunsen flame, it emits a greenish-blue flame because...
energy is emitted by the electrons in the copper atoms
the copper atoms form copper ions
the copper metal forms copper vapour
energy is absorbed by the electrons in the copper atoms
The spectrum of hydrogen gas consists of several series of discrete lines because...
electrons move from higher energy levels to lower energy levels
an electron in a permitted orbit will radiate energy
the electrons have enough energy to escape from the hydrogen atoms to form ions
the electrons in hydrogen atoms move from the ground state to the excited state
The figure shows the lines in Lyman series of the hydrogen spectrum. The line L is caused by the transition of electrons...
from n = 2 to n = 1
from n = 3 to n = 1
from n = 3 to n = 2
from n = 1 to n = 2
In the atomic emission spectrum of hydrogen, how many lines are formed due to the transition of electrons between n = 4 to n = 1?
6
4
5
7
The line with the shortest wavelength is produced in the hydrogen spectrum when electrons move...
from n = 2 to n = 1
from n = 3 to n = 1
from n = 4 to n = 1
from n = 4 to n = 3
The Lyman series in the hydrogen spectrum is found in...
the ultraviolet region
the visible region
the infrared region
the X-ray region
The electronic configuration of the N3- ion is...
1s22s22p3
1s22s22p6
1s22s22p63s23p2
1s22s22p63s23p6
All the following species have the same number of electrons except...
F
Ne
Na+
Al3+
Which of the following elements does not have paired electrons in the p orbitals of its atom?
Element = Carbon; Proton Number = 6
Element = Oxygen; Proton Number = 8
Element = Aluminium; Proton Number = 13
Element = Silicon; Proton Number = 14
An element forms a simple ion with a charge of -2. Which of the following electronic configuration represents this element?
1s22s22p63s23p4
1s22s22p63s23p3
1s22s22p63s23p2
1s22s22p6
Which of the following ions will have half-filled p orbitals when it has lost one electron?
C-
O-
O+
N-
How many unpaired electrons are found in one chromium atom in the ground state? Proton number of chromium is 24.
3
4
5
6
In the Balmer series, the wavelength of the first line is 656.2 nm and the wavelength of the second line is 486.1 nm. What would be the wavelength of the third line?
316 nm
434 nm
534 nm
757 nm
What is the orbital designation corresponding to the quantum numbers: n = 4, l = 2 and m = 0?
2s
2p
4p
4d
When an electric discharge is passed through helium gas at a low pressure,
the helium atoms absorb energy
electromagnetic radiation of certain wavelengths is emitted
a continuous spectrum is produced
The figure above shows the hydrogen spectrum in the visible region. Which of the following statements is correct?
L1 has the shortest wavelength
The wavelength increases from L1 to L5
The wavelength of L2 is shorter than the wavelength of L3
When hydrogen gas is placed under low pressure in a tube and a high voltage is applied, it produces a line spectrum because...
hydrogen atoms have discrete energy levels
the transition of electrons can only occur when certain amounts of energy are emitted
the electrons in hydrogen atoms are all in the ground state
The element with the electronic configuration 1s22s22p63s23p1
has an oxidation number of +3
is placed in Period 3 of the periodic table
has a third ionisation energy which is the lowest
In the Lyman series...
the frequency of the convergence limit can be used to calculate the ionisation energy of hydrogen
every line in the spectrum appears in the visible spectrum
the line with the shortest wavelength is caused by the transition of electrons from n = 2 to n = 1
The formation of the hydrogen line spectrum shows that...
the energy levels are discrete and not continuous
electrons can be excited
the hydrogen bonds are very strong
Which of the following statement(s) is/are correct?
The number of electrons in the 3d orbitals of each atom of iron, cobalt and nickel are different
Each s orbital can be filled with a maximum of two electrons
For the same principal quantum number, the p orbitals have energies higher than the s orbital
Which of the following sets of quantum numbers is/are allowed?
n = 3, l = 2, m = -1
n = 3, l = 0, m = +1
n = 4, l = 4, m = +4
