Answer:
9 protons, 10 neutrons, and 9 electrons.
Explanation:
The particles of the nucleus of an atom of Fluorine-19 is
9 protons, 10 neutrons, and 9 electrons.
Number 13 is D. Mendeleev. He was a Russian chemist and inventor who formulated the periodic table.
Answer:
Occluded Front
Explanation:
"Occluded Front Forms when a warm air mass gets caught between two cold air masses. The warm air mass rises as the cool air masses push and meet in the middle. The temperature drops as the warm air mass is occluded, or “cut off,” from the ground and pushed upward."
-
www.eduplace.com › science › hmxs › pdf
Answer:
45 minutes about
Explanation:
i think because i have 7 periods with 45 minutes each