Like all other halogens, usually one. Like all elements in or below the third row of the Periodic Table, it is able to make additional bonds in some cases, though those are rare. One example is the triiodide ion, where one iodine makes two bonds.
Iodine like all halogens can only form one bond to hydrogen.
An iodine atom has zero covalent bonds. An Iodine molecule has 1 covalent bond.
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Carbon will form four covalent bonds, nitrogen will form three covalent bonds, oxygen will form two covalent bonds, and hydrogen will form one covalent bond. Click on the related link to see a diagram showing the structure of an amino acid.
Ammonia can form four hydrogen bonds per molecule. The lone pair on nitrogen can accept one hydrogen to form a hydrogen bond, and the three hydrogen atoms can bond to lone pairs to form three additional hydrogen bonds. However, if ammonia is the only molecule present, this bonding pattern is problematic because each molecule only has one lone pair per three hydrogen atoms. Thus, an average molecule would likely only have two hydrogen bonds, out of the maximum of four.
They will form seven bonds along with all the other elements in that column on the periodic table.
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.
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The atomic number is not what dictates how many bonds it will form with hydrogen. Iodine is in group 7A (XVII) and so it has 7 valence electrons. It wants 1 more, and so it will share the 1 electron that hydrogen has. It thus will make ONE bond with hydrogen, to form hydrogen iodide, HI.
one bond; H-I.
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Hydrogen.
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Each hydrogen can form one bond with selenium. Each selenium atom can form two bonds, one with each hydrogen (2 hydrogen atoms total).
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one hydrogen bond
A hydrogen atom can form only one bond.