The Answer: Why Is Hydrogen Positive?

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Hydrogen is generally considered neutral with one proton and one electron, but in molecular contexts, it can exhibit a partial positive charge due to bond polarization. This occurs when hydrogen atoms form bonds with more electronegative elements, creating polar molecules like water (H2O), where hydrogen is on the positive side. The discussion suggests that the teacher may have been referring to hydrogen's behavior in molecules rather than its isolated atomic state. Bond polarization is the unequal sharing of electrons between atoms, leading to a dipole moment. Understanding these concepts clarifies why hydrogen can be perceived as positive in certain chemical contexts.
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"Hydrogen Is Positive"

Hello;

My physics teacher said that hydrogen was positive. But, I don't understand why this is true. I thought hydrogen, like any other element, was electrically neutral (because it has 1 proton and 1 electron). So why is it positive?

Thanks.
 
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FeDeX_LaTeX said:
Hello;

My physics teacher said that hydrogen was positive. But, I don't understand why this is true. I thought hydrogen, like any other element, was electrically neutral (because it has 1 proton and 1 electron). So why is it positive?

Thanks.

Yeah .. hard to tell if that was just sloppy, or if there was a point he/she was trying to make. I cannot see what it would be though, if it was just about a free H-atom. If it's about the role H-atoms play in molecules, then it would make a little more sense, since H-atoms usually pick up a partial positive charge in molecules due to bond polarization. But still, it seems like an awfully sweeping generalization.
 


Is it possible that your teacher was talking about a molecule of water? H2O is a polar molecule and the positive side will be towards the hydrogen atoms.

http://en.wikipedia.org/wiki/Polar_molecule
 


That's what makes water sticky isn't it? Because the hydrogen is positive in the water molecule which sticks to the oxygen atom in the water molecule because it is slightly negative.

Can you explain to me a bit more what bond polarization is?
 
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