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Bh- Bohrium
Cd- Cadmium
Bohrium is a synthetic element that is not present in the environment at all.
Cadmium is a lustrous, silver-white, ductile, very malleable metal. Its surface has a bluish tinge and the metal is soft enough to be cut with a knife, but it tarnishes in air
(theres not enough
to show a sample
of it.)
Fr- Francium
Francium was discovered by Marguerite Catherine Perey, a French chemist, in 1939 while analyzing actinium's decay sequence. Although considered a natural element, scientists estimate that there is no more than one ounce of francium in the earth's crust at one time
vocab
actinium- the chemical element of atomic number 89, a radioactive metallic element of the actinide series. It is rare in nature, occurring as an impurity in uranium ores.
lustrous- shinning.
Malleable- able to be hammered or pressed permanently out of shape without breaking or cracking.