Determine the core orbitals and valence orbitals for Ta

• A. core electrons: [Xe]
  valence electrons: 4f¹⁴ 5d³ 6s²
• B. core electrons: [Xe] 4f¹⁴
  valence electrons: 5d³ 6s²
• C. core electrons: [Xe]
  valence electrons: 5d³ 6s²
• D. core electrons: 4f¹⁴
  valence electrons: 5d³ 6s²

Answer: (B)