(B1) PERIODIC TABLE Pg. 84 & 85

1.Across the period from left to right , metallic properties of elements

• DECREASES
• INCREASES
• DECREASES THEN INCREASES
• INCREASES THEN DECREASES

2. Across the period from left to right , No. of shells remains..........

• DIFFERENT
• SAME
• CHANGES
• NOTA

3.Down the group, no. of shells

• DECREASES BY 1
• INCREASES BY 1
• INCREASES BY 2
• DECREASES BY 3

Q-4. Name the metalloid in the 3rd Period?

• A.SODIUM
• B.SILICON
• C.MAGNESIUM
• D.ALUMINIUM

5. Down the group , metallic properties..........

• DECREASES
• INCREASES
• DECREASES THEN INCREASES
• INCREASES THEN DECREASES