Class 11 Chemistry: Structure of Atom Worksheet
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Q1 · MCQ · 1 mark
Which of the following subatomic particles has a positive charge?
Q2 · MCQ · 1 mark
The atomic number of an element is determined by the number of:
Q3 · MCQ · 1 mark
According to Bohr's model, electrons revolve around the nucleus in fixed circular paths called:
Q4 · MCQ · 1 mark
The discovery of neutrons is credited to:
Q5 · MCQ · 1 mark
Which of the following atomic models is also known as the 'plum pudding' model?
Q6 · FILL · 1 mark
The mass number of an atom is the sum of the number of protons and ____ in its nucleus.
Q7 · FILL · 1 mark
Isotopes are atoms of the same element having the same atomic number but different ____ number.
Q8 · FILL · 1 mark
The maximum number of electrons that can be accommodated in an 'n' shell is given by the formula ____.
Q9 · SHORT · 2 marks
State two main limitations of Rutherford's atomic model.
Q10 · SHORT · 2 marks
What is the principal quantum number (n) and what does it indicate?