Answer:
some bonds are broken and new ones are formed. Now you are ready to learn more about those bonds. Chemical bonds are attractions between atoms. They are simply attractive forces (between the + nucleus of one atom and the - electrons of a neighboring atom) that hold groups of atoms together and make them function as a unit.
The atomic number of an atom (Z) is equal to the number of protons.
The mass number of an atom (A) is equal to the number of protons plus the number of neutrons (N), i.e. A = Z + N
Therefore, N = A - Z = 7 - 3 = 4.
So, this neutral lithium atom has 4 neutrons.
Answer: 4.
<u>Explanation:</u>
Hydrocarbons are defined as organic compounds which are only made from carbon and hydrogen atoms.
There are mainly 3 types of hydrocarbons:
- Alkanes are the type of hydrocarbons where a single bond is present between the carbon atoms. The general formula for these is , where 'n' is the number of carbon atoms.
- Alkenes are the type of hydrocarbons where at least one double bond is present between the carbon atoms. The general formula for these is , where 'n' is the number of carbon atoms.
- Alkynes are the type of hydrocarbons where at least one triple bond is present between the carbon atoms. The general formula for these is [tex]C_nH_{2n-2}, where 'n' is the number of carbon atoms.