Just put "One can't describe the motion of particles, due to quantum mechanics particles don't take form until they're measured and even once they are there is no way of knowing if that is their actual form".
The good thing about studying Astrophysics is that there is always a way to correctly make a question unanswerable.
1)4
2)3
3)0
4)12
4(NH4)3 + 3Pb(NO3)4= Pb3(PO4)4 +12NH4NO3
Explanation:
A covalent bond is defined as the occurrence of a bond due to the sharing of electrons between the combining atoms.
Atomic number of hydrogen atom is 1 and its electronic configuration is . So, in order to complete its octet it needs to gain or mutually shares one electron.
A covalent bond is generally formed between non-metal atoms.
Thus, we can conclude that hydrogen has only one electron that will be involved in the formation of a covalent bond.