Try to understand all the rules and laws like:
Aufbau Principle
Hund's rule
Pauli exclusion principle...
Then, you should understand the way in which you can fill the electrons in the orbitals!!
Answer:
decimal and unit ex 1.5 inches
Answer:
The "word equation" is Magnesium + Dioxygen → Magnesium Oxide
Explanation: This is also the same as Mg + O₂ → MgO.
Explanation:
According to the Bronsted-Lowry conjugate acid-base theory:
An acid is defined as a substance which looses donates protons and thus forming conjugate base.
A base is defined as a substance which accepts protons and thus forming conjugate acid.
For example:
Here, 
is loosing a proton, thus it is considered as an acid and after losing a proton, it forms 
which is a conjugate base.
And, 
is gaining a proton, thus it is considered as a base and after gaining a proton, it forms 
which is a conjugate acid.
