Which of the following element is a metalloid ?
Bi
Sn
Ge
C
C.
Ge
Boron (B) , Si , Ge , As , Sb , Te and At are the metalloid elements .Bismuth (Bi) and tin (Sn) are metals while carbon (C) is non-metal .
Dominance of strong repulsive forces among the molecules of the gas (Z = compressibility factor)
depends on Z and indicated by Z = 1
depends on Z and indicated by Z > 1
depends on Z and indicated by Z < 1
is independent of Z.
How does the ionisation energy of 1st group elements vary ?
Increases down the group
Decreases down the group
Remains unchanged
Variation is not regular