Mẹ́tàlì álkálì

Àwọn mẹ́tàlì álkálì ni egbe kan lori tabili idasiko awon elimenti to ni awon elimenti lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs),^{[note 1]} ati francium (Fr) ninu.^[4] Egbe yi wa ni inu s-block lori tabili idasiko^[5] nitoripe gbogbo awon metali alkali ni elektronu ode won ni inu s-orbital.^[6][7][8] Awon metali alkali ni apere ijora egbe bi awon ini lori tabili idasiko,^[6] pelu awon elimenti inu ti won unwuwa isejora.^[6]

Alkali metals in the periodic table
↓ Period
2	3 Li
3	11 Na
4	19 K
5	37 Rb
6	55 Cs
7	87 Fr
Legend Alkali metal Primordial From decay

Akiyesi

1. Caesium is the spelling recommended by the International Union of Pure and Applied Chemistry (IUPAC).^[1] The American Chemical Society (ACS) has used the spelling cesium since 1921,^[2][3] following Webster’s Third New International Dictionary.