1. Number of electrons, protons and neutrons present in 170". 17017 is- a) 172, 17p+, 17n b) 18e . 18p+, 17n 17e . 20p+, 19n 17e . 17p+, 1911 c) 17e, 17p+, 18n d) 18", 17p+, 18n 20 , 20p+. 171 17c". 17p+, 20n
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