EASY
8th Maharashtra Board
IMPORTANT
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Which sub-atomic particles are electrically charged?

Important Questions on Inside the Atom

EASY
8th Maharashtra Board
IMPORTANT
General Science>Chapter 5 - Inside the Atom>Use your brain power>Q 3
Which sub-atomic particles are present in the nucleus?
EASY
8th Maharashtra Board
IMPORTANT
General Science>Chapter 5 - Inside the Atom>Use your brain power>Q 4
Where are electrons revolving around the nucleus placed?
HARD
8th Maharashtra Board
IMPORTANT
General Science>Chapter 5 - Inside the Atom>Use your brain power>Q 1
The symbol used for oxygen is ‘O’. There are 8 protons and 8 neutrons in its nucleus. From this determine the atomic number (Z) and mass number (A) of oxygen and arrange these in a conventional symbol. 
EASY
8th Maharashtra Board
IMPORTANT
General Science>Chapter 5 - Inside the Atom>Use your brain power>Q 2
Atomic number of carbon is 6. How many electrons are there in a carbon atom? 
EASY
8th Maharashtra Board
IMPORTANT
General Science>Chapter 5 - Inside the Atom>Use your brain power>Q 3
A sodium atom contains 11 electrons. What is the atomic number of sodium? 
EASY
8th Maharashtra Board
IMPORTANT
General Science>Chapter 5 - Inside the Atom>Use your brain power>Q 4
The atomic number and mass number of magnesium are 12 and 24 respectively. How will you show this by the convention symbol? 
EASY
8th Maharashtra Board
IMPORTANT
General Science>Chapter 5 - Inside the Atom>Use your brain power>Q 5
The atomic number and mass number of calcium are 20 and 40 respectively. Deduce the number of neutrons present in the calcium nucleus.
HARD
8th Maharashtra Board
IMPORTANT
General Science>Chapter 5 - Inside the Atom>Complete the table
Complete the table:
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