Good old oxygen! O2.
There are 88.
No, but it is an element found in many minerals.
1000
The best place to find products containing oxalic acid is in the cleaning products section of any store. Many household cleaning items, especially bleaches, contain oxalic acid.
Hydrogen and nitrogen.
2
Hydrogen (H)
Oxygen is the most active nonmetallic element in group 16, also known as the oxygen group or chalcogens. It readily reacts with many elements to form oxides.
The Smithsonian Volcanism Project is the best way I've seen to tell which are active and which are not, it says there are 1,581 active at this moment.
the number of protons in an element is called the atomic number and there is no way to see how many electrons an element has.
Barium has 56 protons.
the number of protons in an element is called the atomic number and there is no way to see how many electrons an element has.