11.In th e gro und s tate of atom s, orb itals a re fille d in dec reas ing or der o f their e nerg ies. a TRUE b FALS E

## Step 1<br />The problem is about the filling order of atomic orbitals in the ground state of atoms. The statement in the problem suggests that orbitals are filled in decreasing order of their energies.<br /><br />## Step 2<br />However, this is not the correct order of filling. According to the Aufbau principle, electrons fill atomic orbitals in the order of increasing energy, not decreasing. <br /><br />## Step 3<br />The Aufbau principle is a fundamental rule in quantum mechanics and atomic physics. It states that electrons fill atomic orbitals in the order of increasing energy, not decreasing. <br /><br />## Step 4<br />Therefore, the statement in the problem is false.