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Chemistry 21 Online
Professional:

An atom has 17 protons and 18 neutrons, Which of the following could be the symbol for that atom including its mass number? 35Cl 33Ar 34S 32 Cl

Professional:

@Vocaloid

Vocaloid:

look at the periodic table (ptable.com) which element has an atomic number 17?

Professional:

Cl which is 35,45

Professional:

so A ty

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