NCERT Class 10 Science Chapter 5 Periodic Classification of Elements Extra Questions and Answers
Class 10 Science Chapter 5 Extra Questions and Answers – Periodic Classification of Elements. Here in this Page Class X Students can Learn Extra Questions & Answer 5th Chapter Science fully Inside.
We Provided Here Periodic Classification of Elements Science Chapter 5 MCQ Questions, Very Short Type Questions and Short Type Questions.
Class 10 Science Chapter 5 Extra Question with Answer – Periodic Classification of Elements
Science Chapter 5 Periodic Classification of Elements Class 10 Inside 3 marks, 2 Marks & And 1 Marks Important Questions and Answers.
Part 2 Video Explanation by Net Explanations – https://youtu.be/jpocO0GR10w
Part 3 Video Explanation by Net Explanations – https://youtu.be/sG34SN72d0A
Last Part Video Explanation – https://youtu.be/xG_H8ELkEGU
Multiple Choice Type Questions
(1) How Chlorine, Bromine, Fluorine, Cobalt, and Hydrogen be arranged in order to satisfy the concept of Newlands’ Octaves?
(a)Chlorine, Bromine, Fluorine, Cobalt, Hydrogen
(b)Hydrogen, Fluorine, Bromine, Cobalt, Bromine
(c)Fluorine, Chlorine, Cobalt, Bromine, Hydrogen
(d)Cobalt, Bromine, Hydrogen, Fluorine, Chlorine
Ans: (b)Hydrogen, Fluorine, Bromine, Cobalt, Bromine.
(2) Which option describes the achievements of the Mendeleev’s Periodic Table?
(a)Prediction of noble gases
(b)It eliminated the blank spaces left in the table
(c)Predicting that the elements can be arranged based on their properties
(d)An element in a trend has an average atomic mass of the elements above and below it
Ans: (a) Prediction of noble gases.
(3) Boron is a non-metal and is placed under group 13 and period 2.How can boron form bonds with other elements?
(a)By sharing 5 electrons
(b)By sharing 3 electrons
(c)By sharing 2 electrons
(d)By sharing 1 electron
Ans: (b)By sharing 3 electrons
(4) What is the trend of valency along the periods in the modern periodic table?
(a)It increases from left to right
(b)It decreases from right to left
(c)It increases and then decreases
(d)It decreases and then increases
Ans: (c)It increases and then decreases.
(5) A student learns that the atomic size depends on the atomic radius of the elements. How does the atomic radius of elements in the third-period change as one goes from sodium to argon?
(a)Atomic radius increases from sodium to argon
(b)Atomic radius decreases from sodium to argon
(c)Atomic radius increases as new shells are added
(d)Atomic radius decreases due to the addition of new shells
Ans: (b) Atomic radius decreases from sodium to argon.
Very Short Answer:
(1) According to which periodic law, every eight element repeat its property?
(2) An element ‘X’ has mass number 35 and the number of neutrons is 18. Identify the group number and period of ‘X’
(3) Out of Lithium and Potassium, which one has strong metallic character and why?
(4) Which period and group of the periodic table does an element with atomic number 4 belong to?
Short Answer:
(1) Two elements ‘A’ and ‘B’ have atomic numbers 11 and 19 respectively. State their position in the Modern periodic table. Which element has bigger atomic radius. What is the nature of their oxides.
(2) In the modern periodic table, the element calcium (atomic number = 20) is surrounded by elements with atomic numbers 12, 19, 21 and 38. Which of these elements has physical and chemical properties resembling those of calcium and why?
(3) How does the metallic character of elements change along a period of the periodic table from the left to the right and why?
Long Answer:
(1) Two elements X and Y have atomic numbers 19 and 17 respectively. Give their electronic configuration. To which period and group of modern periodic table do these two elements belong? What type of bond will be formed between them? Also give the chemical formula of the compound formed.
(2) An element placed in Group 14 and 2nd period of the periodic table, burns in the presence of oxygen to form an acidic oxide.
(a) Identify the element.
(b) State the electronic configuration and atomic number of the element.
(c) Write the balanced equations to show its burning in the presence of air and the reaction of its with water. (1 + 2 + 2)