The sum of IE1 and IE2, IE3 and IE4 for element P and Q are given below : (P) IE1+IE2 = 2.45, IE3+IE4 = 8.82; (Q) IE1+IE2 = 2.85, IE3+IE4 = 6.11. Then according to the given information the correct st

Question

The sum of IE1 and IE2, IE3 and IE4 for element P and Q are given below : (P) IE1+IE2 = 2.45, IE3+IE4 = 8.82; (Q) IE1+IE2 = 2.85, IE3+IE4 = 6.11. Then according to the given information the correct statement(s) is/are :

Prashant Kotian · Accepted Answer

Correct answer: A,D. Step 1: Write the electronic configuration of Tantalum (Z=73) relative to the noble gas Xenon (Z=54): [Xe] 4f14 5d3 6s2. Step 2: Since the highest principal quantum number is n=6, it belongs to the 6th period. The group number is calculated as the sum of valence s and d electrons: 2 + 3 = 5. Step 3: This places Tantalum in period 6, group 5, which matches option (c).

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