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WorksheetsPeriodic classification
Total questions: 40
Worksheet time: 20mins
Match the column A with column B
Column A column B
1- i, 2 - iv, 3- ii, 4-iii
1-ii, 2 - i, 3- iv, 4-i
1- iv, 2 - i, 3- iii, 4-ii
1- iv, 2 - i, 3- ii, 4-iii
Modern periodic law states that
When Elements are arranged in increasing order of their atomic masses , the atomic mass of the middle element are approximately equal to the arithmetic mean of other two elements.
When elements are arranged in increasing order of their atomic mass, the eighth element resembles the first element in its properties.
The properties of the elements are the periodic function of their atomic number.
The properties of the elements are the periodic properties of their atomic mass.
Identify the incorrect pair
Group 1 – alkali metals
Group 2 – alkaline earth metals
Group 17 – carbon group
Group 18- inert gases
If lithium form Li2O then sodium should form
Na2O2
Na2O
NaO
NaO2
An element with atomic number 14 is a
Metal
Non metal
Inert gas
Metalloid
Dobereiner triads among the following is
Cl, Br, I
H, Li, K
Cl, K, Ca
Li, Na, Rb
In a triads of A, B and C elements if the atomic mass of B and C are 80 and 100 respectively the atomic mass of a is
80
30
40
60
The name given to eka aluminum after it was discovered
Germanium
Gallium
Scandium
Technetium
The number of groups and periods in modern periodic table are
7 groups and 18 periods
10 groups and 7 period
17 groups and 6 periods
18 groups and 7 periods
Chlorine belongs to
17 group and 3rd period
7th group and 3rd period
3rd group and 17 period
17th group and 2nd period
Atomic number of some elements A, B, C And D present in the modern periodic table are 4,8,10,12,choose the elements that belong to the same group
B and C
A and B
C and D
A and D
An element A has 8 electrons in the M shell which statement given below are correct about the element A
1.It belong to 3rd period
2.It has valency one
3.It’s belongs to 18th group
4.It oxidises easily
1 and 4
1 and 3
1 and 4
3 and 4
What is the trend of valency along the periods in the modern periodic table?
it increases from left to right
it decreases from right to left
it increases and then decreases
it decreases and then increases
Which of the following has maximum number of valence electrons
Sodium
Calcium
Aluminium
Magnesium
Which of the following is the valence shell for the elements of fourth period of the modern periodic table
K
N
M
L
The electronic configuration of an element S with atomic number of 18 is
2,8,8,1
2,8,8
2,9,7
2,7,8,1
Consider the elements of group 17, which of the following properties do not match with elements of 17th group.
Have seven valence electrons in their valence shell
Exist as diatomic molecules
Are metallic in nature
Highly reactive
Elements in the same group have
Same valence electrons
Same atomic size
Same protons
Same electrons
On moving down the group, the property which increases is
Electronegativity
Ionization energy
Metallic nature
Non metallic nature
The type of the bond in the compound XY, where X and Y belong to 1st and 17th group of the periodic table respectively
Covalent bond
Metallic bond
Hydrogen bond
Ionic bond
The element P has an electronic configuration 2 ,8, 3 e element Q has electronic configuration 2,6 the chemical formula of the compound formed when the react is
Ionic P2O3
Ionic P3O2
Covalent P2O3
Covalent P3O2
Observe the table identify the elements belong to same period
Helium and carbon
Sodium and carbon
Carbon and silicon
Sodium and silicon
The element with atomic number 12 resembles the element having atomic number
Germanium -32
Potassium -19
Calcium -20
Argon - 18
An atomic number of an element is 15,predict the nature of oxide formed by it
Amphoteric oxide
Acidic oxide
Basic oxide
Neutral oxide
The distance between a nucleus of an atom and it's valence or outermost shell is known as
Electropositivity
Electronegativity
Ionization energy
Atomic size
Elements having largest atomic size among the following is
Magnesium
Aluminum
Silicon
Phosphorus
Which element has highest atomic size
Lithium
Rubidium
Potassium
Sodium
Arrange the following elements in order of their atomic size P, Al, Si
P < Si < Al
P > Si > Al
Si < Al < P
Al > P > Si
What is the order of the metallic character down the group?
it decreases as new shells are added to the element
it increases as electrons move away from the nucleus
increases as new atoms are added in the same shell
it decreases as the effective nuclear charge on the electron increases
Sodium is more metallic than lithium because
Sodium is smaller in size than lithium
Both are highly electropositve
Both are monovalent
Sodium is larger in size than lithium
Which of the following has highest non metallic character
Li
F
O
C
Which of the following statement is not a correct statement about the Trends when going from left to right across the periods of the modern periodic table
Atoms lose their electrons easily
Number of Valence Electrons increases
Atomic size decreases
Oxides become more acidic
As we move from left to right across the period, atomic size of the elements
Remain same
Decreases
Increases
First increases then decreases
Be, B, C and N belong to the 2nd period of the periodic table, out of these basic oxide formed by the element
Be
B
C
N
Electronegativity is defined as the ability of an element to form bonds by gaining electrons. How does the electronegativity of elements vary across the periods?
it increases as the number of shells increases
decreases as the number of shells decreases
increases as the more of electrons are added to the same shell
it decreases as the more of electrons are added to the same shell
Match the column A with column B
1-ii, 2- i, 3- iii
1-ii, 2- iii, 3- i
1-iii, 2- ii, 3- i
1-i, 2- iii, 3- ii
Which one of the following is generally true
Atomic size increases as we move from left to right in the periodic table
Metallic character decreases as we going down
Electro positivity decreases on going from top to bottom in a group.
Electropositivity increases as we going down
The most metallic element among the following is
Sodium
Magnesium
Aluminum
Beryllium
The correct arrangements of metals in decreasing order their metallic character is
Zinc, magnesium, copper, gold
Iron, potassium, gold, calcium
Potassium, calcium, iron, gold
Sodium, potassium, rubidium, gold
The correct arrangements of elements increasing order of their non metallic character is
Nitrogen, fluorine, oxygen
Fluorine, oxygen, nitrogen
Nitrogen, oxygen, fluorine
Oxygen, fluorine, nitrogen
