1. Number of electrons, protons and neutrons present in 170135, 170137 is------
a) 17e, 17p+, 17n
b) 18e , 18p+, 17n
17e, 20p+, 19n
17e, 17p+, 19n
d) 18e , 17p+, 18n
c) 17e", 17p+, 18n
20, 20p+, 17n
17e , 17p+, 20n
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