If an element has an atomic mass (A) of 119 and an atomic number (Z) of 50, how many neutrons does it have? 50 60 69 119

Original conversation

User: If an element has an atomic mass (A) of 119 and an atomic number (Z) of 50, how many neutrons does it have?
50
60
69
119

User: How much current is drawn by a computer with a resistance of 42O that is connected across a potential difference of 220 V?
9200 amps
6.6 amps
7.0 amps
5.2 amps

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