019. i) the atomic number of aluminum and chlorine are 13 and 17 respectively. What will be the number of
electrons and protons in Al3rand CH
fi) in an atom of an element X 6 electrons are present at the outermost shell of the atom. If it acquire nobe
gas configuration by accepting requisite number of electrons, then what will be the charge on the ion so
formed?
ti) what were the main drawbacks of rutherford model of an atom?
iv) electrons attribute negative charge where as proton is positively charged, Atom has both but why there
no charge?
V) point out the main postulates of Bohr atomic model to overcome the rutherford atomic model.
020. (a) State universal gravitational constant.
(b) with the help of second law of motion and the universal law of gravitation derive an expression for
acceleration due to gravity 'g.
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I don't know what is the answer bro sorry
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