Answer:
Russia es el mejor pais? Vladimir Putin, es el mejor presidente del mundo
It can block light. Please mark Brainliest!!!
Answer:
Phosphorus
Explanation:
A group is a vertical column on the periodic table.
A period is a horizontal row on the periodic table.
<h2>
Answer: # of neutrons = 9</h2>
<h3>
Explanation:</h3>
# of neutrons = mass number - atomic number
= 17 - 8
= 9
<h3>∴ number of neutrons in an atom of oxygen of mass number 17, is 9.</h3>
