Answer:
Phosphorus
Explanation:
A group is a vertical column on the periodic table.
A period is a horizontal row on the periodic table.
Answer:
what? can you translate it in english
Explanation:
I have no explanation and i have no idea
Answer: C. The number of collisions of gas particles decreases
Explanation: As temperature decreases so does everything else same with increase.
Answer: Air
Hope this helps