
Who proposed the planetary model of the atom?
A) Earnest Rutherford
B) Max Planck
C) Neils Bohr
D) James Chadwick
E) JJ. Thompson
Answer
501.9k+ views
Hint: In the planetary model of the atom the electrons will orbit around the nucleus like the planets orbit around the sun. Many atomic models have been proposed. We have to find which is similar to planetary motion.
Complete step by step answer:
The Bohr model of the atom proposed by Neils Bohr is similar to the planetary motion. Hence this model is also known as the planetary model of the atom. He describes that the negatively charged electrons will orbit around the positively charged nucleus. Similar to the gravitational force of attraction between the sun and the planets, in the Bohr model he describes a coulomb force of attraction between the electrons and nucleus.
The electrons orbits or shells can hold a certain number of electrons only. The orbits are named as Principal quantum number . The energy levels having principal quantum number are assigned to the shells named respectively. The size of the atom increases as the number of electrons increases and the number of orbits also. The electron in the outermost orbit experiences less coulomb force of attraction. The energy of the orbit near the nucleus will be the least. The outermost orbit will possess the highest energy.
When the electron is transited from a higher energy state to a lower energy state then the electromagnetic radiation released will have a frequency equal to the energy difference of the initial and final states.
The answer is option C.
Note:
The Bohr model of the atom or planetary model of the atom was proposed by Neils Bohr by modifying the Rutherford model of the atom. In the Rutherford model, the nuclear model of the atom is only described. Neils Bohr fixed the electrons in orbits.
Complete step by step answer:
The Bohr model of the atom proposed by Neils Bohr is similar to the planetary motion. Hence this model is also known as the planetary model of the atom. He describes that the negatively charged electrons will orbit around the positively charged nucleus. Similar to the gravitational force of attraction between the sun and the planets, in the Bohr model he describes a coulomb force of attraction between the electrons and nucleus.
The electrons orbits or shells can hold a certain number of electrons only. The orbits are named as Principal quantum number
When the electron is transited from a higher energy state to a lower energy state then the electromagnetic radiation released will have a frequency equal to the energy difference of the initial and final states.
The answer is option C.
Note:
The Bohr model of the atom or planetary model of the atom was proposed by Neils Bohr by modifying the Rutherford model of the atom. In the Rutherford model, the nuclear model of the atom is only described. Neils Bohr fixed the electrons in orbits.
Recently Updated Pages
Master Class 11 Accountancy: Engaging Questions & Answers for Success

Master Class 11 Social Science: Engaging Questions & Answers for Success

Master Class 11 Economics: Engaging Questions & Answers for Success

Master Class 11 Physics: Engaging Questions & Answers for Success

Master Class 11 Biology: Engaging Questions & Answers for Success

Class 11 Question and Answer - Your Ultimate Solutions Guide

Trending doubts
1 ton equals to A 100 kg B 1000 kg C 10 kg D 10000 class 11 physics CBSE

One Metric ton is equal to kg A 10000 B 1000 C 100 class 11 physics CBSE

Difference Between Prokaryotic Cells and Eukaryotic Cells

What is the technique used to separate the components class 11 chemistry CBSE

Which one is a true fish A Jellyfish B Starfish C Dogfish class 11 biology CBSE

Give two reasons to justify a Water at room temperature class 11 chemistry CBSE
