Answer:
Part A. p, n = 31, 38.
Part B. p, n = 31, 40.
Part C. 
Explanation:
Hello,
Part A.
In this case, since the atomic number for gallium is 31, we can say that the first isotope has also 31 protons and the neutrons are computed by using its molar mass as a whole number (69):
Thus, result is p, n = 31, 38.
Part B.
In this case, since the atomic number for gallium is 31, we can say that the second isotopes has also 31 protons and the neutrons are computed by using its molar mass as a whole number (71):
Thus, result is p, n = 31, 40.
Part C.
Finally, the isotopes as shown as:
Best regards.
<span>Because the Earth's crust is thinnest at the ocean floor; so the easiest access to the mantle is at the ocean floor.</span>
Answer:
Explanation:
Figure 6. An instant cold pack consists of a bag containing solid ammonium nitrate and a second bag of water. When the bag of water is broken, the pack becomes cold because the dissolution of ammonium nitrate is an endothermic process that removes thermal energy from the water.
Answer:
B
Explanation:
Ionic compound can conduct electricity
Answer:
Option A
Explanation:
Silicon (Obtained from Sand (SiO2)) is the element that is primarily used in appliances to make electronic chips.
