The trough and the hill part
Phosphorus is in group 15 meaning it have 5 valence electrons. This means that it needs 3 more electrons to create a full outer shell. As these three electrons are negatively charged it means that P is a 3- ion (it’s an anion [negatively charged ion])
Answer:
Helium
Explanation:
The first ionization energy varies in a predictable way across the periodic table.
(also called Observational Error) is the difference between a measured quantity and its true value. It includes random error
Answer:
Increasing the pressure on a reaction involving reacting gases increases the rate of reaction. Changing the pressure on a reaction which involves only solids or liquids has no effect on the rate.
Explanation:
