NCERT Solutions for Chapter: Structure of the Atom, Exercise 1: Exercise
NCERT Science Solutions for Exercise - NCERT Solutions for Chapter: Structure of the Atom, Exercise 1: Exercise
Attempt the practice questions on Chapter 4: Structure of the Atom, Exercise 1: Exercise with hints and solutions to strengthen your understanding. Science Textbook of Competency Based Questions for Class IX solutions are prepared by Experienced Embibe Experts.
Questions from NCERT Solutions for Chapter: Structure of the Atom, Exercise 1: Exercise with Hints & Solutions
Identify the atomic numbers of the pair of elements which possesses same number of electrons in the L and M shells.
The atomic numbers of three elements A, B and C are , and , respectively. Identify the element which is chemically reactive.
The atomic numbers of the elements X, Y and Z are , and , respectively. Identify the element which does not exist in monoatomic state.
The number of neutrons is equal to the number of protons present in the nucleus of two elements X and Y and their dinegative ions possess electrons in the L and M shells, respectively. Then the ratio of mass numbers of the two elements is:
Match the elements in column A with the valency exhibited by the element given in column B.
| Column A | Column B |
| (A) Neon (B) Oxygen (C) Potassium (D) Boron (E) Silicon |
(a) (b) (c) (d) (e) |
Match the element in column A with the electronic configuration given in column B.
| Column A | Column B |
| (A) Chlorine (B) Scandium (C) Manganese (D) Beryllium |
(a) (b) (c) (d) |
In phosphide ion, the total number of electrons is equal to .
Identify the number of neutrons present in a pair of elements with atomic numbers and , if their mass numbers are and , respectively.
