Answer:
- rows and columns
- period
- atomic orbitals
4.similar properties
5.electrons are very reactive
Answer:
Nitrogen gas is filled inside the electric bulb because it doesn't react with the hot filament. Then, it will carry heat away form the filament to cool it.
<span>Potassium chlorate is a rich source of oxygen It decomposes upon heating to produce potassium chloride and oxygen.</span>
Answer:
The answer is Rubidium
Explanation:
The number of protons is unique for each element. It is also identified as an element’s atomic number. Look for an element with the number of protons as the atomic number to find the unidentified element.
