Answer:
The noble gases with complete outermost shell electrons.
Explanation:
Noble gases or inert gases do not react chemically with other elements because they have a complete configuration of their electronic shells. What drives chemical reaction is simply the exchange of electrons between two or more atoms. It can be a loss, a gain or simple sharing of electrons in order to achieve a complete configuration just like those of noble gases.
Answer:
I believe the answer would be A
Answer:
electrons are less than 1 amu, they are also negative charged. they are very small too
Answer:
The new pressure becomes one third of the initial pressure.
Explanation:
The relation between pressure and volume at constant temperature is given by :

Let new pressure and volume be P' and V' respectively.
V'=3V (given)
So,

Hence, new pressure becomes one third of the initial pressure.
Q. What type of radioactive decay involves two protons and two neutrons?
A. Alpha emission