How many bonds can Hydrogen make?

Recently I saw a video which told me that Hydrogen has a valency of 1, i.e, Hydrogen can only bond with 1 other atom. But since hydrogen wants a complete shell, it can have 2 covalent bonds with 2 electrons. Please explain.




Apart from some Group 13 weirdness, hydrogen can only make one bond. Covalent bonds require pairs of electrons and hydrogen can only have two electrons bound in one covalent bond.


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Hydrogen forms 1 single bond when there is a s-s overlap which is the greatest overlap but it can also form 2 single bond where there are 2 s-p overlaps such as is 
Even in compounds like $\ce{B2H6}$, H seems to make 2 bonds but it doesn't.
[![enter image description here](https://i.stack.imgur.com/1XYJx.jpg)](https://i.stack.imgur.com/1XYJx.jpg) 


As you can see the two Hydrogen atoms in the centre make 2 bonds each with Boron.


The number of a bonds that hydrogen can make is dependent on the type of bonding.


It can form only a single ionic bond. 
  

It can form two bonds when there is overlap involved (covalent bond)
  

It can form a single covalent bond.
  

If stability can be achieved it can form a lot of coordinate bonds, but due to it's small size and only a single proton I would think a max of 1 coordinated bond can be formed if we being with an ionised H-atom.


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