Question

How many neutrons does the element sodium (Na) contain?

a
12
b
11
c
13
d
23

Answer 1

a) 12 neutrons

Step-by-step explanation:

The atomic mass is 22.990, which can be rounded to 23 and is the combination of protons and neutrons. The atomic number is 11 (protons), and 23-11=12, whoch would be the neutron number

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