Question

Write/Choose the correct answer.
1.
are represented by chemical formulae.
2. Atoms of the same or different elements can join together to form molecules. (True/False)
3. Can an atom of hydrogen exist independently? If not, then how does it exist?
4. Phosphorus contains
atoms in its molecule.
5. Molecular formula gives the number of atoms of each kind of element present in one molecule a compound.( True/ False)
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Answer 1

Answer:

1st :false

2nd: Hydrogen has only 1 electron so it is not stable and cannot exist independently. It either loses an electron , gains an electron or share it's electron with other hydrogen atom

The symbol of phosphorus is “P” and the atomic number is 15 and atomic mass number is 31. Phosphorus exists as a tetratomic molecule that is there are 4 atoms of phosphorus in one molecule of phosphorus.

Explanation:

I don't know the last 1