Question

give the solution of class -8d.a.v book

Answer 1

1 .

Mercury (metal) and bromine (non-metal) exist in liquid state at room temperature. Caesium and gallium are metals with melting point less than 310 K.

2.Sodium and potassium are two metals which are soft and can be cut with a knife.

3.is the image

4 Copper is less oxidative than other metals and protects the metal from corrosion and doesn’t interfere with conductivity. Copper has less resistivity and is less oxidative. The conductivity will be more for metals with low resistivity.

5.is the image