20:40 Vo) Vo) 4G LTE LTE2 43% i < physical sciences p... ✓ a Copyright reserved PHYSICAL SCIENCES P2 Please turn over 7/20 (EC/NOVEMBER 2020) QUESTION 4 Below is the Aufbau diagram of an unknown atom. Study the diagram and answer the following questions. 3s 2p 25 1s 4.1 Define the term atomic number. Use the Aufbau diagram of an unknown atom above to answer the following questions. 4.2 In which group and period is the atom in the diagram above? 4.3 Represent the atom in the diagram using 4X notation. 4.4 How will the neutrality of the above atom change if it loses electron(s)? 4.5 Write down the sp notation of an ion for the atom represented by the Aufbau diagram above. 4.6 What will happen to the number of protons if the above atom loses electron(s) to become an ion? Write down INCREASE, DECREASE or UNCHANGED. Copyright reserved (EC/NOVEMBER 2020) PHYSICAL SCIENCES P2 (1) (2) 8 སེང་སེ (1) [9] Please turn over 8/20 QUESTION 5 Study the following table of elements with the first ionisation energy values in kJ.mol and answer the questions that follow. ELEMENT Li Be B C N FIRST IONISATION ENERGY (KJ.MOL) 520 899 801 1 086 1402

20:40 Vo) Vo) 4G LTE LTE2 43% i < physical sciences p... ✓ a Copyright reserved PHYSICAL SCIENCES P2 Please turn over 7/20 (EC/NOVEMBER 2020) QUESTION 4 Below is the Aufbau diagram of an unknown atom. Study the diagram and answer the following questions. 3s 2p 25 1s 4.1 Define the term atomic number. Use the Aufbau diagram of an unknown atom above to answer the following questions. 4.2 In which group and period is the atom in the diagram above? 4.3 Represent the atom in the diagram using 4X notation. 4.4 How will the neutrality of the above atom change if it loses electron(s)? 4.5 Write down the sp notation of an ion for the atom represented by the Aufbau diagram above. 4.6 What will happen to the number of protons if the above atom loses electron(s) to become an ion? Write down INCREASE, DECREASE or UNCHANGED. Copyright reserved (EC/NOVEMBER 2020) PHYSICAL SCIENCES P2 (1) (2) 8 སེང་སེ (1) [9] Please turn over 8/20 QUESTION 5 Study the following table of elements with the first ionisation energy values in kJ.mol and answer the questions that follow. ELEMENT Li Be B C N FIRST IONISATION ENERGY (KJ.MOL) 520 899 801 1 086 1402

Chemistry & Chemical Reactivity

9th Edition

ISBN:9781133949640

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter7: The Structure Of Atoms And Periodic Trends

Section: Chapter Questions

Problem 83SCQ: Slaters rules are a way to estimate the effective nuclear charge experienced by an electron. In this...

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