d and f BLOCK ELEMENTS

What is the ground state electronic configuration of Iron (Fe, Z=26)?

• [Ar] 3d⁸
• [Ar] 3d⁵ 4s³
• [Ar] 3d⁷ 4s¹
• [Ar] 3d⁶ 4s²

What is the ground state electronic configuration of Manganese (Mn, Z=25)?

• [Ar] 3d⁷
• [Ar] 3d⁴ 4s³
• [Ar] 3d⁶ 4s¹
• [Ar] 3d⁵ 4s²

What is the ground state electronic configuration of Chromium (Cr, Z=24)?

• [Ar] 3d⁴ 4s²
• [Ar] 3d⁶
• [Ar] 3d³ 4s³
• [Ar] 3d⁵ 4s¹

What is the ground state electronic configuration of Vanadium (V, Z=23)?

• [Ar] 3d⁵
• [Ar] 3d² 4s³
• [Ar] 3d⁴ 4s¹
• [Ar] 3d³ 4s²

What is the electronic configuration of the ground state of Hassium (Hs, Z=108)?

• [Rn] 5f¹⁴ 6d⁵ 7s³
• [Rn] 5f¹⁴ 6d⁷ 7s¹
• [Rn] 5f¹⁴ 6d⁴ 7s⁴
• [Rn] 5f¹⁴ 6d⁶ 7s²