Question

7.

Lithium is an element in Group 1 of the Periodic Table.
Lithium is stored in oil to prevent it from coming into contact with air and water.
(a) When a piece of lithium isremoved from the oil, dried and cut, the exposed surface (1)
A bubbles and fizzes
B changes from shiny to dull
C bursts into flame
D does not change

Answer 1

The correct answer is (A) bubbles and fizzes.

Step-by-step explanation:

When a piece of lithium is removed from the oil, it will still be wet with oil. When the surface of the lithium is cut, it will be exposed to air and will react with the oxygen in the air. This reaction will cause the lithium to bubble and fizz as it forms a thin layer of lithium oxide on its surface. The lithium will not change from shiny to dull or burst into flame.

Answer 2

because lithium is an akali and having a valence electrons 1 whereas all the alkalies lie in group 1 called alkalies group