Because going down a column you are jumping up to the next higher main energy level (n) and each energy level is further out from the nucleus
Answer: 150 grams
Explanation: m = V × ρ
= 15 milliliter × 10 gram/cubic centimeter
= 15 cubic centimeter × 10 gram/cubic centimeter
= 150 gram
Answer:
Endothermic hope that helps
Explanation: