Atomic number is the number of protons!
So, 117!
Answer:
Boron 11
Explanation:
This element is Boron because it has 5 protons.
The isotope is Boron - 11 because it has 5 protons and 6 neutrons, 6+5=11.
Answer:
theory of plate tectonics
Explanation:
So now, we can say that one square metre is equal to 10000 square centimetres. So to change 460000 square centimetres into square metres, we take our value of 460000. And we divide by 100 squared. This is the same as 460000 divided by 10000, which is 46 square metres.
Answer:
C. a dense region of positive charge existed somewhere in the atom.
Explanation:
Physicist Ernest Rutherford created the gold foil experiment in which he shot a beam of alpha particles at a sheet of gold foil, which then sent a few of the particles flying after they were deflected. Based on the information gathered after completing this experiment, Rutherford concluded that a dense region of positive charge existed somewhere in the atom.
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