Answer:
D. Cr
Explanation:
In order to determine which atom has at least one electron in its d orbital, we have to write their theoretical electron configurations.
- ₁₉K 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹
- ₂₄Cr 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁴
Cr has 4 electrons in d orbitals. Cr belongs to the d-block in the periodic table.
Answer:
9,000, 100 has 7 significant figures
Explanation:
Answer:
The state of the water molecule, when its ice it become a special crystallized structure.
Explanation:
Physical science , earth science,and life science are the branches of natural science