0 any of a group of soft, white metals that are chemical elements and react easily with other substances -- 碱金属
Inducing n-type doping within the silicene structure requires an alkali metal dopant.
The alkali metal magnetometer is very expensive to use but it is very sensitive and has fast cycles when it is used.
The radius increases sharply between the noble gas at the end of each period and the alkali metal at the beginning of the next period.
The number of states of rare gas halides is greater than that of alkali metal salts.
When alkali metal cyanides are used, at least partial neutralization of the reaction medium is usually necessary to provide desired products.
All of the alkali metal fluorides, and most of the alkali earth metal fluorides are true salts.
Hence, the larger alkali metal atoms (further down the group) will be less electronegative as the bonding pair is less strongly attracted towards them.
This natural radioactivity became a basis for a mistaken claim of the discovery for element 87 (the next alkali metal after caesium) in 1925.
