Answer:
i think is c,my ans will not be 100%correct
B, the opposing forces are the same, thus, the ball doesn't move back or forward.
Answer: 3p Orbitals
Explanation:
Electrons present in the 3p orbitals are farthest from the nucleus. Therefore, the electrons present in the 3p orbital will be shielded by the electrons present in the inner orbitals. Hence, 3p orbital in sulfur is most shielded from the nuclear charge".
Answer:
Ruler
Explanation:
Ruler and eraser kakgjwjeigidiifigig
Cs -137 has a half life of about 30 years. If 60 years pass, there is two half lives passed so 1/2 * 1/2= 1/4. Take 1/4 and multiply it with the mass given:
(1/4)*20mg=5mg left
