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Chapters
2: Health and Diseases
3: Force and Pressure
4: Current Electricity and Magnetism
▶ 5: Inside the Atom
6: Composition of Matter
7: Metals and Nonmetals
8: Pollution
9: Disaster Management
10: Cell and Cell Organelles
11: Human Body and Organ System
12: Introduction to Acid and Base
13: Chemical Change and Chemical Bond
14: Measurement and Effects of Heat
15: Sound
16: Reflection of Light
17: Man made Materials
18: Ecosystems
19: Life Cycle of Stars
![Balbharati solutions for Science [English] 8 Standard Maharashtra State Board chapter 5 - Inside the Atom - Shaalaa.com](/images/science-english-8-standard-maharashtra-state-board_6:eb537b0cf4ff4519ab07a4325c00b766.jpg "Balbharati solutions for Science [English] 8 Standard Maharashtra State Board chapter 5 - Inside the Atom")
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Solutions for Chapter 5: Inside the Atom
Below listed, you can find solutions for Chapter 5 of Maharashtra State Board Balbharati for Science [English] 8 Standard Maharashtra State Board.
Balbharati solutions for Science [English] 8 Standard Maharashtra State Board 5 Inside the Atom Exercise [Page 38]
What is the difference in the atomic models of Thomson and Rutherford?
What is meant by the valency of an element?
What is meant by atomic mass number?
What is meant by the term subatomic particles?
Give brief information of three subatomic particles with reference to electrical charge, mass and location.
Give scientific reason.
All the mass of an atom is concentrated in the nucleus.
Give scientific reason.
Atom is electrically neutral.
Give scientific reason.
Atomic mass number is a whole number.
Give scientific reason.
Atoms are stable though negatively charged electron is revolving within it.
Define the following term:
Atom
Define the following form:
Isotope
Define the following form:
Atomic number
Define the following form:
Atomic mass number
Define the following form:
Moderator in nuclear reactor
Draw a neat labelled diagram
Rutherford's scattering experiment
Draw a neat labelled diagram.
Thomson's atomic model
Draw a neat labelled diagram.
Diagramatic sketch of electronic configurations of magnesium (Atomic number 12)
Draw a neat labelled diagram.
Diagramatic sketch of electronic configuration of Argon (Atomic number 18)
Electron, proton, neutron are the types of ______ in an atom.
An electron carries a ________ charge.
The electron shell ______ is nearest to the nucleus.
The electronic configuration magnesium is 2, 8, 2. From this it is understood that the valence shell of magnesium is ______.
The valency of hydrogen is one, as per the molecular formula H2O. Therefore valency of 'Fe' turns out to be ______ as per the formula Fe2O3.
Match the pairs.
| Group 'A' | Group 'B' |
| a. Proton | i. Negatively charged |
| b. Electron | ii. Neutral |
| c. Neutron | iii. Positively charged |
Deduce from the datum provided.
| Datum | To deduce |
| \[\ce{_11^23Na}\] | Neutron number |
| \[\ce{_6^14C}\] | Mass number |
| \[\ce{_17^37 Cl}\] | Proton number |
Solutions for 5: Inside the Atom
Balbharati solutions for Science [English] 8 Standard Maharashtra State Board chapter 5 - Inside the Atom
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Concepts covered in Science [English] 8 Standard Maharashtra State Board chapter 5 Inside the Atom are Structure of an Atom, J. J. Thomson’s Atomic Model, Lord Rutherford’s Atomic model, Neils Bohr’s Model of an Atom, History of Atom, Dalton’s Atomic Theory, Atoms: Building Blocks of Matter, Atomic Mass, Electronic Configuration of Atom, Isotopes, Nuclear Reactor, Valency.
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