Periodic Table - Chemistry

1.  Modern periodic law had been given by—

A. Mendeleev 

B. Lavoisier

C. Moseley

D. Lother-Mayer

2. Which one is known as the father of periodic table?

A. Mendeleev 

B. Lavoisier

C. Neil Bohr

D. Rutherford

3. The vertical lines in the modern periodic table are called—

A. Non-metal

B. Group

C. Period

D. None of the above

Ans. B

The vertical lines in the modern periodic table are called GROUP.

4. The horizontal lines in the modern periodic table are called—

A. Metal

B. Group

C. Period

D. None of the above

Ans. C

The horizontal lines in the modern periodic table are called PERIOD.

5. How many periods are present in the modern periodic table?

A. 7

B. 8

C. 6

D. 2

Ans. A

7 periods are present in the modern periodic table.

6. How many groups are present in the modern periodic table?

A. 18

B. 17

C. 16

D. 15

Ans. A

18 groups are present in the modern periodic table.

7. The elements in group zero are called—

A. Inert gases

B. Transition metals

C. Alkali metals

D. None of the above

Ans. A

They are the most stable due to having the maximum number of valence electrons their outer shell can hold.

Therefore, they rarely react with other elements since they are already stable.

8. All the elements in a group in the periodic table have the same—

A. Same number of valence electrons

B. Atomic number

C. Atomic weight

D. None of the above

Ans. A

Elements in a group in the periodic table have the same number of valence electrons i.e. same valency.

9. Which of the following element(s) are/is new in the periodic table?

A. Nihonium (Nh, 113) and Moscovium (Mc, 115)

B. Tennessine (Ts, 117) and Oganesson (Og, 118)

C. Both (A) and (B)

D. None of the above

Ans. C

The International Union of Pure and Applied Chemistry has announced the names of four elements in the periodic table that were discovered. Moscovium (Mc), nihonium (Nh), tennessine (Ts) and oganesson (Og) complete the seventh row of the table. The elements — with atomic numbers 113, 115, 117 and 118 — were discovered in a joint effort by American and Russian scientists.

10. In year 2016 , in which month new elements were found in the periodic table? 

A. February

B. January

C. March

D. April

Ans.  B

The International Union of Pure and Applied Chemistry has announced the names of four elements in the periodic table that were discovered in January 2016.

Question: Modern periodic law had been given by- 
Answer:Moseley

Question: Which one is known as father of periodic table- 
Answer:Mendeleev

Question: Which elements are arranged in increasing order of atomic weight every eighth element has properties similar to the first" This law had been given by- 
Answer:Newland

Question: In modern period table the number of period is- 
Answer:7

Question: In modern periodic table the group number is- 
Answer:18

Question: The vertical lines in modern periodic table are called- 
Answer:Group

Question: The horizontal line in modern periodic table is called- 
Answer:Period

Question: The elements in group zero are called- 
Answer:Inert gases

Question: The first attempt to classify elements was made by- 
Answer:Mendeleev

Question: The elements on the right side of the periodic table are- 
Answer:Non-metals

Question: The first element of rare earth metal is- 
Answer:Cerium

Question: The properties of elements of Mendeleev's periodic law were the periodic functions of their- 
Answer:Atomic Weight

Question: The long form of periodic table was developed by- 
Answer:Range and Werner

Question: The long form of periodic table is based on- 
Answer:Atomic number

Question: Modern periodic table is based on atomic number of the elements. The significance of atomic number was proved by the experiment of- 
Answer:Moseley's work on X-ray spectra

Question: In a period, the element are arranged in the order of-- 
Answer:Increasing charges in the nucleus

Question: All the elements in a group in the periodic table have the same- 
Answer:Same number of valence electrons

Question: Which of the following pairs of atomic numbers represent the element belonging to the same group ? 
Answer:13 and 31

Question: The element that has the highest first ionization potential is -- 
Answer:Nitrogen

Question: The electron affinity of chlorine is highest than that of fluorine due to - 

Answer:Bigger size

Question: Electron affinity of noble gases is- 
Answer:Almost zero

Question: Which of the following element has the lowest electron affinity ? 
Answer:Argon

Question: The calculation of electronegativities was first done by-- 
Answer:Pauling

Question: Who gave the extended form of periodic table 
Answer:Neil Bohr

Question: How is group number determined? 
Answer:Valence Electrons

Question: What are elements of group 1A known as 
Answer:Alkali metals

Question: What is Periodicity? 

Answer:The periodic properties that reoccur at regular intervals are called periodic properties and the phenomenon is known as the periodicity of elements