Answer:
21
Step-by-step explanation:
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The magnitude of the vector is
the component form is
<2,5>
11, add six and a half to four and a half.
There are 13 protons because the atomic number (the number in the top left corner) represents the number of protons. Then, to find the number of neutrons, you take the number of protons and subtract it from the atomic mass (the number on the bottom) when it is rounded. The number of electrons is the same as the protons when the atom is neutral
See picture for answer and solution steps.
