The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus. The number of neutrons is equal to the difference between the mass number of the atom (M) and the atomic number (Z).
Answer:
2.5 L
Explanation:
I got the same question, I just don't remember how I got the answer. But it was right.
The +17 is referring to the number of protons within the atom. The minus signs with circles around them represent electrons orbiting the nucleus.
Answer:
The sound from the whales singing is faster than that from the birds chirping.
Explanation:
The sound from the whales singing will travel faster than the sound from the birds chirping because sound travels faster through a medium than through air.
In this case the whales are in water which is a medium while the birds are in the air and thus, the sound from the water will travel faster.
<span>The pointer will be above the zero mark</span>