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mcqs of
,
1 : Identify the electronic configuration of the outermost shell of a transition metal.
A
:
Ns2np4
B
:
Ndxns2
C
:
Ns2np6
D
:
Ns2+np5
2 : In which period and group will you place the element which is an important part of the solar cell?
A
:
Third period and 14th group
B
:
2nd period and 14th group
C
:
Third period and 15th group
D
:
3rd period and 16th group
3 : Which is the shortest metal?
A
:
Na
B
:
Ca
C
:
AI
D
:
Zn
4 : How many electrons can nitrogen accept in its outersmost shell?
A
:
2
B
:
3
C
:
4
D
:
5
5 : Which element is the most reactive element?
A
:
Oxygen
B
:
Chlorine
C
:
Fluorine
D
:
Nitrogen
6 : A yellow solid element exist in allotropic forms which is also present in fossil fuels: indicate the name.
A
:
Carbon
B
:
Iodine
C
:
Aluminium
D
:
Sulphur
7 : In what order does the metallic character change in the second group?
A
:
Mg>Ca>Ba>Sr
B
:
Sr> Ba> Ca> Mg
C
:
Mg>Sr>Ca >Ba
D
:
Ba >Sr >Ca> Mg
8 : Which of the following best described the character order of oxygen, fluorine, and nitrogen's atomic radii?
A
:
O< F
B
:
N
C
:
F
D
:
O
9 : The element having less value of ionization energy and less value of electron affinity in likely to belong to:
A
:
Group 1
B
:
Group 13
C
:
Group 16
D
:
Group 17
10 : Which element has the highest melting point?
A
:
Na
B
:
K
C
:
Rb
D
:
Cs
11 : How many groups are there in the modern periodic table?
A
:
8
B
:
18
C
:
7
D
:
10
12 : Who is credited with developing the modern periodic table?
A
:
Dmitri Mendeleev
B
:
Henry Moseley
C
:
John Dalton
D
:
J.J. Thomson
13 : Which element is located in Group 1 and Period 3?
A
:
Lithium (Li)
B
:
Sodium (Na)
C
:
Potassium (K)
D
:
Magnesium (Mg)
14 : The modern periodic table is arranged in increasing order of:
A
:
Atomic mass
B
:
Atomic number
C
:
Neutron number
D
:
Electronegativity
15 : The period number indicates the number of:
A
:
Valence electrons
B
:
Electron shells
C
:
Bromine (Br)
D
:
Iodine (I)
16 : Which group contains elements that form ions with a charge of -1?
A
:
Group 1
B
:
Group 17
C
:
Group 2
D
:
Group 18
17 : The charge on ions formed by oxygen is:
A
:
-1
B
:
-2
C
:
+1
D
:
+2
18 : Which element is located in Group 17 and Period 2?
A
:
Fluorine (F)
B
:
Similar physical properties
C
:
The same number of protons
D
:
The same atomic size
19 : Elements in the same group have similar:
A
:
Atomic numbers
B
:
Atomic masses
C
:
Valence electrons
D
:
Number of neutrons
20 : Atomic size decreases across a period because:
A
:
New shells are added
B
:
Electrons are removed
C
:
Nuclear charge increases
D
:
Valence electrons decrease
21 : Atomic size increases as you move:
A
:
Across a period from left to right
B
:
Down a group
C
:
Up a group
D
:
Across a period from right to left
22 : Elements in the same group have:
A
:
Similar physical properties
B
:
Similar chemical properties
C
:
The same number of protons
D
:
The same atomic size
23 : Elements with the same number of valence electrons are placed in the same:
A
:
Group
B
:
Period
C
:
Row
D
:
Block
24 : Ionization energy increases across a period because:
A
:
Atomic size decreases
B
:
Atomic number decreases
C
:
Valence electrons increase
D
:
Electron shielding increases
25 : Which of the following elements has the lowest electronegativity?
A
:
Fluorine (F)
B
:
Potassium (K)
C
:
Oxygen (O)
D
:
Sodium (Na)
26 : Ionization energy decreases as you move:
A
:
Across a period from left to right
B
:
Down a group
C
:
Up a group
D
:
Across a period from right to left
27 : Atomic size is smallest in:
A
:
Noble gases
B
:
Alkali metals
C
:
Halogens
D
:
Alkaline earth metals
28 : The group number of an element with 5 valence electrons is:
A
:
5
B
:
10
C
:
15
D
:
16
29 : How many periods are there in the modern periodic table?
A
:
5
B
:
6
C
:
7
D
:
8
30 : The smallest atomic size in Period 2 is found in:
A
:
Lithium (Li)
B
:
Carbon (C)
C
:
Fluorine (F)
D
:
Neon (Ne)
31 : As the number of electron shells increases, the atomic size:
A
:
Increases
B
:
Decreases
C
:
Stays the same
D
:
Becomes unpredictable
32 : Which element has the largest atomic size?
A
:
Fluorine (F)
B
:
Sodium (Na)
C
:
Potassium (K)
D
:
Cesium (Cs)
33 : Elements with low ionization energy are usually:
A
:
Non-metals
B
:
Metals
C
:
Noble gases
D
:
Metalloids
34 : Metallic character increases as you move:
A
:
Across a period from left to right
B
:
Down a group
C
:
Up a group
D
:
Across a period from right to left
35 : Electron affinity refers to the energy change when:
A
:
An atom gains an electron
B
:
An atom loses an electron
C
:
An atom forms a bond
D
:
An atom breaks a bond
36 : Ionization energy is the energy required to:
A
:
Add an electron to an atom
B
:
Remove an electron from an atom
C
:
Split an atom into two parts
D
:
Form a chemical bond
37 : Which element is the most metallic?
A
:
Sodium (Na)
B
:
Potassium (K)
C
:
Cesium (Cs)
D
:
Magnesium (Mg)
38 : Which of the following elements has the highest ionization energy?
A
:
Sodium (Na)
B
:
Fluorine (F)
C
:
Oxygen (O)
D
:
Neon (Ne)
39 : Non-metals typically have:
A
:
High electronegativity
B
:
Low electronegativity
C
:
High metallic character
D
:
Low ionization energy
40 : The element with the highest electronegativity is:
A
:
Oxygen (O)
B
:
Fluorine (F)
C
:
Chlorine (Cl)
D
:
Neon (Ne)
41 : Electronegativity decreases:
A
:
Across a period from left to right
B
:
Across a period from right to left
C
:
Down a group
D
:
As atomic size decreases
42 : The horizontal rows in the periodic table are called:
A
:
Groups
B
:
Families
C
:
Periods
D
:
Columns
43 : The charge on ions formed by Group 2 elements is:
A
:
+1
B
:
-1
C
:
+2
D
:
-2
44 : Group 1 elements form ions with a charge of:
A
:
+1
B
:
-1
C
:
+2
D
:
0
Chapter 8 : Periodic Table and Periodicity
Chemistry 9th MCQs || Ilam Ghar
Chemistry 9th
