Test Your Understanding About Atomic Structure
Pls try out this quiz to test your understanding.
- 1.The nucleus of an atom
- A.
Always contains protons and neutrons
- B.
Is neutral
- C.
Contains protons only
- D.
Usually contains protons and neutrons
- 2.Which of the following statements about the atom is true?
- A.
No of electrons= no of protons
- B.
No of protons = no of neutrons
- C.
No of electrons = no of neutrons
- D.
No of neutrons = no of protons
- 3.The neutron is a particle that has
- A.
A mass of 1g, which is the same as that of a proton
- B.
The same charge as the electron
- C.
A mass that is approximately that of the proton
- D.
The same charge as that of the proton
- 4.The nucleon number of chlorine is 35 and its proton number is 17. It can therefore be deduced that the atom has
- A.
35 neutrons
- B.
18 neutrons
- C.
17 neutrons
- D.
35 protons and electrons
- 5.All isotopes of an element contain
- A.
The same number of electrons as neutrons
- B.
The same number of protons as neutrons
- C.
The same number of neutrons
- D.
The same number of protons
- 6.The structures of five atoms are given in the table below. Determine which pairs are isotopes. Atom No. of neutrons No. of electrons No. of protons P 16 15 15 Q 16 16 16 R 17 15 15 S 17 17 17 T 18 16 16
- A.
P & R
- B.
P & S
- C.
Q & R
- D.
Q & S
- 7.The chlorine atom and ion are
- A.
Chemically identical
- B.
Have the same number of electrons
- C.
Isotopes
- D.
Have the same number of protons
- 8.The atoms in the Periodic Table are arranged in terms of
- A.
Ascending proton numbers
- B.
Electrons lost
- C.
Descending proton numbers
- D.
Electrons gained
- 9.The sulphur atom contains 16 electrons. It can be deduced that
- A.
It has 16 valence electrons
- B.
The atomic mass is 16
- C.
It is found in group 6
- D.
It is a metal
- 10.Elements in the same group of the Periodic Table have the
- A.
Same number of electrons
- B.
Same number of valence electrons
- C.
The same number of electron shells
- D.
The same number of filled electron shells
- 11.Valence electrons refer to those that
- A.
Are found in the first electron shell of the atom
- B.
Are given away by an atom to form an ion
- C.
Are taken in by the atom
- D.
Exist in the outermost shell of the atom
- 12.Which of the following represents the electronic configuration of calcium (atomic number of Ca = 20)?
- A.
(2, 8, 10)
- B.
(2, 8, 8, 2)
- C.
(2, 10, 8)
- D.
(2, 18)
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