Encyclopedia > S-block

Article Content

S-block

Groups 1A (alkali metals) and 2A (alkaline earth metals) of the periodic table, Hydrogen, and helium make up the S-block (for sharp) elements. These elements have noble gas structures.

An s orbital can hold a maximum of 2 electrons.

Other Blocks:

d-block
f-block
g-block
p-block

See Electron shell, Orbitals

All Wikipedia text is available under the terms of the GNU Free Documentation License

Search Encyclopedia

Search over one million articles, find something about almost anything!

Featured Article

Urethra

... (25-38 mm) long and opens in the vulva between the clitoris and the vaginal opening. In the human male, the urethra is about 8 inches (200 mm) long and opens at th ...