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Displaying 5 out
of 21
questions & answers.
Q1.
State the meaning of the term
- atom
- molecule
- radical
with a suitable example.
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Answer:
S A M P L E
answer not shownQ2.
Draw the basic structure of an atom representing its-
- Subatomic particles
- Nucleus
- Orbits or shells
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S A M P L E
answer not shownQ3.
In the Modern Periodic Table atoms of all elements are arranged according to their increasing order of - atomic numbers. An atom of nitrogen has seven protons & seven electrons. State what would be its atomic number.
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Answer:
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Nitrogen has 7 protons and 7 electrons.
so, Atomic Number [Z] = number of protons = number of electrons = 7
so, Atomic Number of Nitrogen is 7
Q4.
State the main points of contradiction of Dalton's atomic theory by the Modern Atomic Theory.
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answer not shownQ5.
'Atoms of the same element or different elements combine to form a molecule'.
Give two examples each of-
- atoms of the same element
- atoms of different elements combining to form a molecule.
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Answer:
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- Oxygen (O2), Hydrogen (H2)
- Water (H2O), Ammonia (NH4)
