1 (apex)
A hydrogen atom can form a maximum of one covalent bond.
Each atom of carbon can form up to four bonds, while each atom of hydrogen can form up to one bond.
Hydrogen.
It'll form either one (if something else is bonding to the oxygen atom) or two (if you're making water, in which case you need two hydrogen atoms).
In an alcohol molecule, there are usually two types of chemical bonds - covalent bonds between carbon and oxygen, and hydrogen bonds between hydrogen and oxygen atoms. Each carbon atom forms a single covalent bond with the oxygen atom, while the hydrogen atoms form single covalent bonds with the oxygen atom.
A hydrogen atom can form a maximum of one covalent bond.
Each atom of carbon can form up to four bonds, while each atom of hydrogen can form up to one bond.
Each hydrogen can form one bond with selenium. Each selenium atom can form two bonds, one with each hydrogen (2 hydrogen atoms total).
Hydrogen.
It'll form either one (if something else is bonding to the oxygen atom) or two (if you're making water, in which case you need two hydrogen atoms).
A hydrogen atom can form one bond by sharing its single electron with another atom to achieve a full outer shell of electrons and become stable.
In an alcohol molecule, there are usually two types of chemical bonds - covalent bonds between carbon and oxygen, and hydrogen bonds between hydrogen and oxygen atoms. Each carbon atom forms a single covalent bond with the oxygen atom, while the hydrogen atoms form single covalent bonds with the oxygen atom.
When hydrogen and oxygen combine to form water, a total of two bonds are formed. One bond is formed between each hydrogen atom and the oxygen atom. This results in the formation of H-O bonds.
Oxygen doesn't have any hydrogen bonds. A hydrogen bond is when a hydrogen atom is bonded with an electronegative atom, such as oxygen. Oxygen all by itself does not have hydrogen bonded to it. It is simply written as 02.
Well you have to consider how many it can "donate" and how many it can "accept". According to wikipedia water can form four. So considering methanol, the delta positive hydrogen can from one H-bond and the the two lone pairs on the oxygen can form one each. So it can form three hydrogen bonds. Don't worry about the hydrogens on the carbon they don't take part.
Hydrogen peroxide (H2O2) can form two hydrogen bonds. Each oxygen atom in the molecule can act as a hydrogen bond acceptor, allowing for two potential hydrogen bonds to form with other molecules or within the H2O2 molecule itself.
Carbon can have maximum of 4 single bonds around it, thus 4 hydrogen atoms.