The Periodic Classification Test

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The Periodic Classification Test - 3

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following metal is not placed in the VIII group of Mendeleev's periodic table?

A
Na

B
Fe

C
Pt

D
Ni

E
All of these

Solution

Fe, Pt, Ni have belonged to the VIII group in Mendeleev's Periodic Table. Na belongs to the I group not the VIII group.
So, Na metal is not placed in the VIII group of Mendeleev's periodic table.
Hence, the correct option is (A).

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Question 2
1 / -0

The electronic configuration of an element is 2, 8, 7. Which of the following statements is true for the element?

A
It will form acidic oxide.

B
It has the lowest ionisation energy in its period.

C
It has the lowest electron affinity in its period.

D
It has valency of seven.

E
It has metallic character.
Question 3
1 / -0

Which of the following elements has the least number of shells in its atom?

A
Na

B
Ca

C
Ga

D
Ba

E
Br
Question 4
1 / -0

The number of elements in the 4th period of the periodic table is/are:

A
8

B
18

C
22

D
24

E
26
Solution
The number of elements in the 4th period of the periodic table is 18.
- Mosley gave the modern long form of the periodic table where the base of classification was the atomic number.
- According to Mosley's periodic law, the physical and chemical properties of elements are periodic functions of their atomic number.
- In the long-form periodic table, horizontal rows are called periods and vertical rows are called groups.
- In 4th period contains elements from atomic number 19 to 36.
Hence, the correct option is (B).
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Question 5
1 / -0

Which of the following elements has the tendency to gain electrons?

A
Ca

B
Cu

C
Co

D
Cl
Question 6
1 / -0

Which of the following elements has the lowest electron affinity?

A
C

B
O

C
F

D
Ne

E
H
Question 7
1 / -0

Which of the following statements is true?

A
Mg has more number of electrons than Ca in the outermost shell.

B
Ca has more number of electrons than Mg in the outermost shell.

C
Mg has more number of electrons than Ca in its atom.

D
Ca has more number of electrons than Mg in its atom.
Question 8
1 / -0

Elements with which of the following electronic configurations will show periodicity in their properties?

A
2, 5 and 2, 8, 1

B
2, 7 and 2, 8, 18, 7

C
2, 4, and 2, 5

D
2, 8, 4 and 2, 8, 5

E
2, 8, 1 and 2, 8 , 6
Question 9
1 / -0

Oxides of which of the following elements show the most acidic character?

A
B

B
C

C
N

D
F

E
O
Question 10
1 / -0

Which of the following elements has the highest metallic character?

A
Fe

B
Co

C
Ni

D
Ca
Question 11
1 / -0

Which of the following is the correct order of elements on the basis of increasing tendency to gain electrons?

A
Na < Si < Al < Mg < P

B
P < Mg < Al < Si < Na

C
Na < Mg < Al < Si < P

D
P < Si < Al < Mg < Na
Question 12
1 / -0

Which of the following elements will have the largest atomic size?

A
Potassium

B
Titanium

C
Iron

D
Copper

E
Zinc
Question 13
1 / -0

How many shells are present in an atom of potassium?

A
2

B
3

C
4

D
5

E
1
Question 14
1 / -0

Which of the following statements is true?

A
Potassium has higher metallic character than sodium.

B
Sodium has larger atomic size than potassium.

C
Potassium has higher number of valence electrons than sodium.

D
Sodium has higher number of electron shells than potassium.
Question 15
1 / -0

Which of the following elements has the tendency to form positive ions?

A
S

B
Br

C
Ar

D
Al
Question 16
1 / -0

What is the correct order of the elements of group 1 on the basis of their metallic character?

A
Li < K < Na < Rb < Cs

B
Li < Na < K < Rb < Cs

C
Cs < Rb < K < Na < Li

D
Cs < Rb < Na < K < Li
Question 17
1 / -0

Which of the following halogens has the highest non-metallic character?

A
Cl

B
Br

C
F

D
I

E
At
Question 18
1 / -0

Which of the following elements forms the least basic oxide?

A
Na

B
K

C
Rb

D
Cs
Question 19
1 / -0

Which of the following statements is true?

A
Be has higher ionisation energy but lower electron affinity than Ca.

B
Be has lower ionisation energy but higher electron affinity than Ca.

C
Be has higher ionisation energy and electron affinity than Ca.

D
Be has lower ionisation energy and electron affinity than Ca.
Question 20
1 / -0

Which of the following elements has the highest number of electrons in its valence shell?

A
Element A

B
Element C

C
Element P

D
Element E

E
Element D
Question 21
1 / -0

How many groups and periods are there in the Modern Periodic Table?

A
16 Groups and 9 Periods

B
18 Groups and 7 Periods

C
14 Groups and 9 Periods

D
18 Groups and 9 Periods
Solution
18 Groups and 7 Periods are there in the Modern Periodic Table.
- The elements in the periodic table are arranged horizontally in ascending order of their atomic numbers.
- Vertically the elements having identical chemical properties are clubbed together.
- The 18 groups are also known as columns and the 7 periods are also known as the rows.
Hence, the correct option is (B).
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Question 22
1 / -0

What happens to the electropositive character of elements on moving from left to right in a periodic table?

A
Increase

B
Decreases

C
First increases then decrease

D
First decreases then increase

Solution

The electropositive character of elements decreases on moving from left to right in a periodic table. The electropositive character of an element is its ability to lose electrons and form positive ions. Now, as on moving from left to right in a period of the periodic table, the nuclear charge increases due to the gradual increase in the number of protons, so the valence electrons are pulled more strongly by the nucleus. Thus, it becomes more and more difficult for the atoms to lose electrons
Hence, the correct option is (B).

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Question 23
1 / -0

What is the correct order of atomic size of the elements of the second period?

A
N < C < B < Be < Li

B
Li < Be < B < C < N

C
Be < Li < B < C < N

D
C < B < Be < Li < N

E
Be < B < C < Li < N
Question 24
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Why group 2 elements are called alkaline earth metals?

A
Because they are alkaline in water

B
Because they are soft earthy metals

C
Because they are found on the earth's surface as mineral oxides

D
All of the above

Solution

Group 2 elements of the periodic table are also called alkaline earth metals. These are Beryllium, magnesium, calcium, strontium, barium, and radium. These metals are called so as they are alkaline in their aqueous solution and soft metals(soft earthy metals). They are found on the earth’s surface as mineral oxide.
The alkaline earth metals are named after the alkaline earth whose old-fashioned names were beryllia, magnesia, lime, strontia, and baryta, after their oxides. When mixed with water, these oxides are simple (alkaline). Beryllium, magnesium, calcium, strontium, barium and radium are the elements in Group 2.
Hence, the correct option is (D).

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The Periodic Classification Test - 3

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The Periodic Classification Test - 3

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Question 1

Na

Fe

Pt

Ni

All of these

Solution

Question 2

It will form acidic oxide.

It has the lowest ionisation energy in its period.

It has the lowest electron affinity in its period.

It has valency of seven.

It has metallic character.

Question 3

Na

Ca

Ga

Ba

Br

Question 4

8

18

22

24

26

Solution

Question 5

Ca

Cu

Co

Cl

Question 6

C

O

F

Ne

H

Question 7

Mg has more number of electrons than Ca in the outermost shell.

Ca has more number of electrons than Mg in the outermost shell.

Mg has more number of electrons than Ca in its atom.

Ca has more number of electrons than Mg in its atom.

Question 8

2, 5 and 2, 8, 1

2, 7 and 2, 8, 18, 7

2, 4, and 2, 5

2, 8, 4 and 2, 8, 5

2, 8, 1 and 2, 8 , 6

Question 9

B

C

N

F

O

Question 10

Fe

Co

Ni

Ca

Question 11

Na < Si < Al < Mg < P

P < Mg < Al < Si < Na

Na < Mg < Al < Si < P

P < Si < Al < Mg < Na

Question 12

Potassium

Titanium

Iron

Copper

Zinc

Question 13

2