Q12. The atomic number of an element X is 17 and atomic mass is 35. Calculate its sub atomic
particles?
Q13. An element is represented by X4018
(a) write its electronic configuration 2,8,8
(b) Calculate its valency and valence electrons.
(c) calculate its electron proton and neutron
(d)Draw its structure on the basis of Bohr atomic model
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Explanation:
12. No. of protons =17
No. of electrons =17
No. of neutrons =35−17=18
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