in-the-periodic-table-silicon-has-an-atomic-mass-listed-as-28-08550-and-not-28-0

Question

In the periodic table, Silicon has an atomic mass listed as 28.08550 and not 28.00000. Choose the statement that explains why atomic masses in the periodic table are not integral numbers.

Accepted Answer

The weighted average of the isotopes is displayed as atomic mass.

Answer

Samples are contaminated when masses are measured

Answer

Atoms significantly change their masses due to gaining and losing electrons easily

Answer

Masses are not exact.

Answer

Exact measurements for small quantities are technically impossible.