Rajesh Singh, Indu Gupta and, Sikha Sharma Solutions for Chapter: Periodic Classification of Elements, Exercise 3: Long Answer Type Questions
Rajesh Singh Science Solutions for Exercise - Rajesh Singh, Indu Gupta and, Sikha Sharma Solutions for Chapter: Periodic Classification of Elements, Exercise 3: Long Answer Type Questions
Attempt the free practice questions on Chapter 5: Periodic Classification of Elements, Exercise 3: Long Answer Type Questions with hints and solutions to strengthen your understanding. NCERT EXEMPLAR PROBLEMS-SOLUTIONS SCIENCE Class X solutions are prepared by Experienced Embibe Experts.
Questions from Rajesh Singh, Indu Gupta and, Sikha Sharma Solutions for Chapter: Periodic Classification of Elements, Exercise 3: Long Answer Type Questions with Hints & Solutions
(a) Electropositive nature of the element (s) increases down the group and decreases across the period.
(b) Electronegativity of the element increases across the period.
(c) Atomic size increases down the group and decreases across a period (left to right).
(d) Metallic character increases down the group and decreases across a period.
On the basis of the above trends of the periodic table, answer the following about the element with atomic numbers to .
Name the most electropositive elements among them.
(a) Electropositive nature of the element (s) increases down the group and decreases across the period.
(b) Electronegativity of the element increases across the period.
(c) Atomic size increases down the group and decreases across a period (left to right).
(d) Metallic character increases down the group and decreases across a period.
On the basis of the above trends of the periodic table, answer the following about the element with atomic numbers to .
Name the most electronegative element.
(a) Electropositive nature of the element (s) increases down the group and decreases across the period.
(b) Electronegativity of the element increases across the period.
(c) Atomic size increases down the group and decreases across a period (left to right).
(d) Metallic character increases down the group and decreases across a period.
On the basis of the above trends of the periodic table, answer the following about the element with atomic numbers to .
Name of the element with smallest atomic size.
(a) Electropositive nature of the element (s) increases down the group and decreases across the period.
(b) Electronegativity of the element increases across the period.
(c) Atomic size increases down the group and decreases across a period (left to right).
(d) Metallic character increases down the group and decreases across a period.
On the basis of the above trends of the periodic table, answer the following about the element with atomic numbers 3 to 9.
Name the element which is a metalloid.
(a) Electropositive nature of the element (s) increases down the group and decreases across the period.
(b) Electronegativity of the element increases across the period.
(c) Atomic size increases down the group and decreases across a period (left to right).
(d) Metallic character increases down the group and decreases across a period.
On the basis of the above trends of the periodic table, answer the following about the element with atomic numbers to .
Name the element which shows maximum valency.
An element of group exists as diatomic molecule and combines with hydrogen at in presence of the catalyst to form a compound, ammonia which has a characteristic pungent smell.
Draw the electron dot structure for ammonia and what type of bond is formed in it?
Which group of elements could be placed in Mendeleev's periodic table without disturbing the original order? Give reason.
Give an account of the process adopted by Mendeleev for the classification of elements. How did he arrive at "periodic law"?
