Question

which has more number of atoms hundred gram of sodium or hundred gram of iron​

Answer 1

100 g of sodium:

Number of sodium atoms

= 2.62 x 1024 atoms.

 

100 g of iron :

Number of iron atoms

= 1.07 x 1024 atoms

Thus, 100 g of sodium has more atoms.

Answer 2

Answer:

• 1.07 x 10²⁴ atoms of Na.

Step - by - step - explanation :

Given :

Atomic mass of Na = 23 u

So, the molar mass of Na = 23 g

Atomic mass of fe = 56 g

So, the molar mass of fe = 56 g

Therfore,

23g of Na contains 6.022 × 10²³ of atoms

100 g of Na contains = 6.022 × 10²³ × 100/23=2.6×10²⁴ atoms of Na.

Similarly, molar mass of fe = 56g

Therefore,

56g of Fe contains 6.033 × 10²³ of atoms

100g of Na contains 6.022 × 10²³ × 100/56

= 1.07 × 10²⁴ atoms of Na.