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If the atomic weight of neon is 20, then know the number of atoms in 1 gm neon -
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Given, atomic mass of Neon = 20 g
Hence, molar mass of Neon = 20 g (since its inert gas, it exist in single atom)
Given mass = 1 gm
So, moles = Given mass/molar mass
=> mol = 1/20
Now, number of atoms = mol × Avogadro number
Hence, number of atom = 1/20 × 6.022 × 10²³
=> Number of atom = 0.3011 × 10²³
=> Number of atom = 3.011 × 10²²
Answer :- 3.011 × 10²²
Hence, molar mass of Neon = 20 g (since its inert gas, it exist in single atom)
Given mass = 1 gm
So, moles = Given mass/molar mass
=> mol = 1/20
Now, number of atoms = mol × Avogadro number
Hence, number of atom = 1/20 × 6.022 × 10²³
=> Number of atom = 0.3011 × 10²³
=> Number of atom = 3.011 × 10²²
Answer :- 3.011 × 10²²
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