Question

pls answer this question

Answer 1

The Conditions 1 Atm Pressure and 273 K Indicate that the Experiment is Performed under STP Conditions.

At STP : 1 Mole of Neon Gas occupies a Volume of 22.4 litres.

We Know that : 1 Litre = 1000cm³

1 Mole of Neon Contains 6.023 × 10²³ Atoms of Neon

⇒ 6.023 × 10²³ Atoms of Neon occupies a Volume of 22400cm³

Given that the Box Measures : 10cm × 11.2cm × 10cm

⇒ Volume of given Box = 1120cm³

Number of Neon Atoms in the Box = (1120 × 6.023 × 10²³)/22400

⇒ Number of Neon Atoms in the Box = 3.011 × 10²²

We know that One Neon Atom Contains 10 Electrons

Number of Electrons of Neon in Box = 3.011 × 10²² × 10 = 3.011 × 10²³

Number of Electrons of Neon in the Box = 3.011 × 10²³

Option (2) is the Answer