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173Lu has how many protons and neutrons

1 Answer

4 votes

Answer:

71 protons

102 neutrons

Step-by-step explanation:

Step 1: Find atomic number of Lu

Lu - Element number 71

So we know that Lu has 71 protons.

Step 2: Identify Lu - 173

173 is the atomic mass number, meaning the combined number of protons AND neutrons.

173 - 71 = 102 neutrons

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