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प्रश्न
Multiple Choice Questions
The sub atomic particle with negative charge is
विकल्प
proton
neutron
electron
nucleon
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उत्तर
electron
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संबंधित प्रश्न
Explain the Atomic number with example.
What are the two main features of Rutherford’s atomic model?
The mass number of an element is 18. It contains 7 electrons. What is the number of protons and neutrons in it? What is the atomic number of the element?
What is meant by the 'atomic number of an element'?
Match the atomic numbers 4,8,10,15 and 19 with the following:
Element with four shells
Draw the structure of the following atoms showing the nucleus containing – protons, neutrons and the orbits with the respective electron:
Carbon [At. no. = 6, Mass no. = 12]
Elements A, B and C have atomic numbers 9, 20 and 10 respectively.
- State which one is
(1) a non-metal,
(2) a metal,
(3) chemically inert.[A,B,C] - Write down the formula of the compound formed by two of the above elements.[BA2]
An element ‘A’ has mass number 23 and atomic number 11. State the –
- no. of neutrons in its shell,
- electronic configuration of the element ‘A’.
Atomic number : ______ :: Mass number : Number of protons and neutrons.
The particles that make up the atom are called ______ particles.
