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How many electrons does boron-50 have?
12
8
40
5
11
6
5
10
What is the mass number of carbon?
12
8
40
5
11
6
5
10
How many neutrons are in beryllium-10?
12
8
40
5
11
6
5
10
How many protons does boron-15 have?
12
8
40
5
11
6
5
10
What is the mass number of beryllium?
12
8
40
5
11
6
5
10
What is the mass number of potassium-40?
12
8
40
5
11
6
5
10
What is the atomic number of sodium?
12
8
40
5
11
6
5
10
How many netrons does boron-15 have?
12
8
40
5
11
6
5
10
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