how many protons, neutrons and electrons are contained in each element? a)27 over 13 AI, b)35 over 17 CI, c)34S

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12-07-2020
Chemistry

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how many protons, neutrons and electrons are contained in each element? a)27 over 13 AI, b)35 over 17 CI, c)34S

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hoodini2 hoodini2 · Answer 1 · 2020-07-12T22:00:53+02:00

Since the number on top is the mass number (number of neutrons and protons) while the number at the bottom is the atomic number ( number of protons)

A) 13 protons, 14 neutrons (27-13)

For the number of electrons it has to be equal to the number of protons if the atom is uncharged.

Therefore you have 13 electrons.

B) 17 protons, 18 neutrons (35-17)

18 electrons

C) What is the atomic number of Sulphur - need slightly more info