Answer:
8
Explanation:
octet rule: Atoms lose, gain, or share electrons in order to have a full valence shell of eight electrons. Hydrogen is an exception because it can hold a maximum of two electrons in its valence level.
B- lack of control.
the scientists did not have a proper control group.
When the force on some area is doubled and the area doesn't change,
then the pressure on that area has doubled.
The correct answer would be True!
