Answer:
The answer is B: main-group elements.
Explanation:
Answer:
2. Chemical reactions changes occur when the bonds between atoms in a molecule are created or destroyed.
3. When you reach your its boiling point, the molecules in liquid have enough energy to become a gas.
4. When you have a solid with more than one type of compound, it is called a mixture.
5. A Crystal is a form of solid where the atoms are arranged is a very specific order.
6. If you have different types of molecules dissolved in a liquid, it is called a solution
Rocks are made up of different compounds. Gases like nitrogen, oxygen and water vapour and some non-metallic oxides react with these compounds to form new compounds and then break down into fine particles, due to breaking of bonds between the atoms, caused by the reaction of gases.This leads to break down of rocks into fine particles
In the second energy level, the highest energy subshell is 2p. The subshells are shown by the orbital quantum numbers.
There are four sets of quantum numbers that describe an electron in an atom which are;
- Principal quantum number
- Orbital quantum number
- Magnetic quantum number
- Spin quantum number
The values of the orbital quantum number which shows the energy subshell in which an electron is found must take on values from 0 to (n - 1).
Having said that, for an atom with more than one electron, the highest energy subshell in the second energy level corresponds to l =1 which is the 2p orbital. Remember that s p d f corresponds to 0 1 2 3 .
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