The answer above is correct:)
Answer:
B. The transition of heat across matter
The answer is (d)
Electrons are outside the nuclues in energy levels. Protons have a positive charge, neutrons have no charge, and electrons have a negative charge. A neutral atom contains equal numbers of protons and electrons
I hope it helped you!
The study of people's efficiency in their working environment.
A) Mass Number
B) Protons and Electrons
C) (I think group but I'm not 100% sure on this...)
D) 12 (To work out the number of neutrons you do MASS number - ATOMIC number aka the number of protons so in this case you'd do 23-11=12)
Hope this helps