Question

Name a metalloid which is liquid in room temperature ? Name an alkali metal which is radioactive?? Why are calcium , stronium,and barium are named as alkaline earth??

Answer 1

Metalloid at room temperature is mercury .

Radioactive metal is potassium.

They are beryllium, magnesium, calcium, strontium, barium, and radium. They are less reactive than alkali metals, but they form (except for beryllium) alkaline oxides and hydroxides. Alkaline earth metals all have two valence electrons, and they easily oxidize to the +2 state. Alkaline earth metals are very flammable.

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Answer 2

Answer:

Boron (B)

Silicon (Si)

Germanium (Ge)

Arsenic (As)

Antimony (Sb)

Tellurium (Te)

Polonium (Po)