Question

which has masimum number of atoms?
( a) 24g Carbon
(b) 56g Iron
(c) 27g of Aluminum
(d) 20g of Calcium​

Answer 1

Explanation:

Let's Check all the options then we tell that which option has maximum number of atoms

Option 1 -

24 g of C

n = mass/GAM

→ n = 24/12

→ n = 2

We know that,

• Number of atom = n × 6.022 × 10²³

≈ n × 6 × 10²³

= 2 × 6 × 10²³

= 12 × 10²³

Option 2 -

56 g of Fe

→ n = 56/56

→ n = 1

Now,

Number of atom = 1 × 6 × 10²³

= 6 × 10²³

Option 3 -

27 g of Al

→ n = 27/27

→ n = 1

Now,

Number of atom = 1 × 6 × 10²³

= 6 × 10²³

Option 4 -

20 g of Ca

→ n = 20/40

→ n = 1/2

We know that,

Number of atoms = 1/2 × 6 × 10²³

= 3 × 10²³

Here, we see that Option 1 has maximum number of atoms

Therefore,

Option (a) is correct.