Tuesday, October 12, 2021

Periodic Classification of Elements | Class 10 | Activity 5.9 with Solution

Periodic Classification of Elements | Activities in Text Book with Solution

Activity 5.9

Examine elements of the third period and classify them as metals and non-metals.

✅ Answer:

Elements with Atomic No.

Configuration

Metal / Non-metal

Na (11)

2, 8, 1

Metal

Mg (12)

2, 8, 2

Metal

Al (13)

2, 8, 3

Metal

Si (14)

2, 8, 4

Metalloid

P (15)

2, 8, 5

Non-Metal

S (16)

2, 8, 6

Non-Metal

Cl (17)

2, 8, 7

Non-Metal

Ar (18)

2, 8, 8

Non-Metal


On which side of the Periodic Table do you find the metals?

✅ Answer: Left side.

On which side of the Periodic Table do you find the non-metals?

✅ Answer: Right side.

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