H
5
1.5
- noun
- /eɪtʃ/
- Specialized
:
hidrógeno
- In the periodic table, H stands for hydrogen, which is the first element with the atomic number one.
- H2
- H atoms
- C-H bond
Examples
-
The Sun discards 50,000 billion metric tons of H each year in the solar wind.
Blog text (23) -
To conduct either test, though, one needs large quantities of H atoms at low enough temperatures to make high-precision measurements.
Academic text (2002) -
Yeah, because that would have to be H, which is hydrogen.
-
A majority of the faint objects are H-alpha sources associated with the photoevaporating envelopes of low-mass stars.
Academic text (1994) -
In chemistry, H is commonly used to represent hydrogen gas, a crucial component of water.
-
When calculating the molecular weight of water, you should remember that it contains two H atoms.
Compounds
- Informal
A mild, funny phrase people say instead of swearing when surprised or angry
Surface Forms
Etymology
H as a chemical symbol stands for hydrogen, a name made from Greek parts hydro- 'water' and -gen 'former'. The name means 'water-maker', which helps explain why H marks the lightest element that joins with oxygen to make water.