Question

The mass of a single atom of an element is 2.65×10^-23. what is its atomic mass . what could this element be?
complete steps solution

Answer 1

The atomic mass of an element is numerically equal to the mass of 1 mole of its atoms.

1 mole of atoms = 6.022 × 10^23 atoms

Now, 1 atom of element X has mass = 2.65 × 10^-23g

So 6.022 × 10^23 atoms of element X have mass = 2.65 × 10^-23×6.022 × 10^23

                                                                       = 15.96 = 16g

                                       

Atomic mass of the element X is 16u.

Oxygen is the element with atomic mass 16 and having  symbol O.

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Answer 2

Here's the answer check this out