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kvv77 [185]
3 years ago
10

An atom has 17 protons and 18 neutrons.

Chemistry
1 answer:
Wewaii [24]3 years ago
3 0

Answer:

Cl

Explanation:

cl has mass number 35 and its atomic number is 17 so number of proton =atomic number 17 and number of neutron is =mass number -number of proton =35-17 =18

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