IB DP Chemistry Mock Exam SL Paper 1B Set 1 - 2025 Syllabus
IB DP Chemistry Mock Exam SL Paper 1B Set 1
Prepare for the IB DP Chemistry Exam with our comprehensive IB DP Chemistry Exam Mock Exam SL Paper 1B Set 1. Test your knowledge and understanding of key concepts with challenging questions covering all essential topics. Identify areas for improvement and boost your confidence for the real exam
Question
State the condensed electron configurations for Cr and Cr3+. [2]
Cr:
Cr3+:
Answer/Explanation
Ans:
Cr: [Ar] 4s13d5
Cr3+: [Ar] 3d3
Accept “[Ar] 3d54s1 ”.
Accept “[Ar] 3d34s0 ”. A
ward [1 max] for two correct full electron configurations “1s22s22p63s23p64s13d5 AND 1s22s22p63s23p63d3 ”. Award [1 max] for 4s13d5 AND 3d3