Electron Configuration of All Elements. We covered all the Electron Configuration of All Elements in this post for free so that you can practice well for the exam.
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MCQ on Electron Configuration of All Elements
An element having atomic number 34 can be placed in which of the given group and periods of the modern periodic table?
(a) Group 15 and 4th period
(b) Group 16 and 5th period
(c) Group 14 and 7th period
(d) Group 16 and 4th period
Option d – Group 16 and 4th period
The elements with atomic numbers 4, 12, 20, 38, 56, and 88 belong to which of the given group?
(a) Alkai metals
(c) Inert gases
(d) Halogens
Which pair of elements have similar chemical behavior?
(a) Sodium and Aluminium.
(b) Argon and Potassium.
(c) Nitrogen and Phosphorus.
(d) Boron and Germanium
Option c – Nitrogen and Phosphorus
What is the atomic radius of a hydrogen atom?
(a) 35 pm
(b) 36 pm
(c) 37 pm
(d) 38 pm
Option c – 37 pm
Which of the following is a borderline element?
(a) Rubidium
(b) Technitium
(c) Polonium
(d) Zirconium
Option c – Polonium
Three elements P, Q, and R form a Dobereiner triad. The atomic weights of P and R are 35 and 127 respectively. Find the atomic weight of Q.
(a) 40
(b) 60
(c) 81
(d) 120
Option c – 81
Which elements in the periodic table are chemically inactive?
(a) Representative elements
(b) Inert gases
(c) Transitional elements
(d) Inner transitional elements
Option b – Inert gases
Find the atomic number of an element belonging to group IA and the 3rd period in the periodic table.
(a) 3
(b) 11
(c) 19
(d) 20
Option b – 11
Which type of electrons determines the nature and type of bonds formed by an element?
(a) Electrons in ‘s’ orbital
(b) Electrons in the valence shell
(c) Electrons in ‘p’ orbital
(d) Electrons in ‘d’ and ‘f’ orbitals
Option b – Electrons in the valence shell
Which element contains half filled ‘d’ orbital?
(a) Vanadium
(b) Zinc
(c) Chromium
(d) Titanium
Option c – Chromium
Which of the following is a transitional element?
(a) Pb
(b) As
(c) Al
(d) Ni
Option d – Ni
Identify the period which contains s, p, and d block elements.
(a) 2nd period
(b) 3rd period
(c) 4th period
(d) 1st period
Option c – 4th period
How many electrons are there in the outermost orbit of each element in the IA group?
(a) 1
(b) 2
(c) 3
(d) 7
Option a – 1
“Properties of the elements are the periodic function given by their atomic number”. This law was
(a) Doberiner
(b) Newland
(c) Mendeleev
(d) Henry Moseley
Option d – Henry Moseley
Which among the following is not the characteristic property of a metal?
(a) Electronegativity
(b) Lusterous
(c) ductility
(d) Malleability
Option a – Electronegativity
Which among the following is correct, showing the increasing order of atomic radii?
(a) Be<B<O<N<Li
(b) O<B<N<Be <Li
(c) N<O<B<Be <Li
(d) O<N<B<Li<Be
Option c – N
s-block elements are
(a) those elements in which the last electron enters in p-orbital.
(b) those elements in which the last electron enters in d-orbital.
(c) those elements in which the last electron enters in f-orbital.
(d) those elements in which the last electron enters in s-orbital.
Option d – those elements in which the last electron enters in s-orbital
On the basis of the following features identify correct option A. All elements of this group are gases. B. All elements are chemically inert under ordinary conditions.
(a) Group 18
(b) Group 17
(c) Group 14
(d) Group 16
Option a – Group 18
Which period is the longest in the periodic table?
(a) Third
(b) Fourth
(c) Sixth
(d) Seventh
Option c – Sixth
Each of the following elements forms univalent ions except
(a) Li
(b) Na
(c) Mg
(d) K
Option c – Mg
Considering the elements B, Al, Mg, and K, the correct order of their metallic character is
(a) B>Al> Mg > K
(b) Al> Mg > B>K
(c) Mg>Al>K>B
(d) K> Mg>Al > B
Option d – K> Mg>Al > B
Which of the following hydroxides is the most basic?
(a) Be(OH)₂
(b) Ba(OH)₂
(c) Ca(OH)₂
(d) Mg(OH)₂
Option b – Ba(OH)₂
An atom has an electronic configurations 2, 8, and 5. To which of the following elements would it be chemically similar?
(a) F(9)
(b) Na (11)
(c) N (7)
(d) Ar (18)
Option c – N (7)
An element X has an atomic number of 16, with which of the following elements will it show similar chemical properties?
(a) Ne (10)
(b) N (7)
(c) O (8)
(d) Be (4)
Option c – O (8)
Which of the following elements does not lose an electron easily?
(a) Na
(b) F
(c) Mg
(d) Al
Option b – F
We covered all the electron configuration of all elements above in this post for free so that you can practice well for the exam.
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