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Atoms and reactions

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Question 24

An element D D\,D has the following successive ionization energies (in kJ mol−1\text{kJ~mol}^{-1}kJ mol−1):

IE1=738,IE2=1451,IE3=7733,IE4=10543 \text{IE}_1 = 738, \quad \text{IE}_2 = 1451, \quad \text{IE}_3 = 7733, \quad \text{IE}_4 = 10543 IE1​=738,IE2​=1451,IE3​=7733,IE4​=10543

Another element E E\,E is a non-metal with the valence-shell electron configuration ns2np3ns^2 np^3ns2np3.

What is the likely formula of the ionic compound formed between D D\,D and EEE?

A

D2E3D_2E_3D2​E3​

B

D3E2D_3E_2D3​E2​

C

D5E2D_5E_2D5​E2​

D

D2E5D_2E_5D2​E5​

Markscheme

Atoms and reactions Questions

  1. A Level
  2. /Chemistry
  3. /Atoms and reactions

199 exam-style questions on OCR A A Level Chemistry Atoms and reactions, covering Atomic structure and isotopes, Compounds, formulae and equations, Amount of substance, Acids, and Redox. Each one has a worked solution and a mark scheme showing where the marks go.

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