How often does the water cycle occur on earth?
A)all the time
B)once per month
C)once per week
D)Once per year

Write the chemical symbols for three different atoms or atomic cations with 27 electrons. asap!

Check the correct box to describe the periodic trends in electronegativity. electronegativity across a period: decreases. increases. electronegativity down a group: decreases. increases.

Start an single atom tab. observe the decay of polonium-211. after each decay, press the reset nucleus button to watch the process again. write a description of alpha decay for po-211