Q4. What is the frequency (s ) of radiation that has a wavelength of 459 nm? A. 6.54 x 10 B. 6.54 x 10" C) 1.53 x 10' D. 18 x 10'

Chemistry & Chemical Reactivity
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Chapter3: Chemical Reactions
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Problem 67GQ: Bromine is obtained from sea water by the following redox reaction: Cl2(g) + 2 NaBr(aq) 2 NaCl(aq)...
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Q4. What is the frequency (s) of radiation that has a wavelength of 459 nm?
A. 6.54 x 104
B. 6.54 x 10"
C) 1.53 x 10'
D. 18 x 10'
Q5. Which one of the following is not a redox reaction?
A. 2H,0to > 2H,0 + Oz)
B. Ni + 3H → 2NH
C. BaClyeo + K,CrO > BaCroi + KCl
D. 2Al + Fe,O→ Al,Oa + 2Fe
Q6. What are the reacting ions when Pb(NO,), and NaCl react in aqueous solution?
A. Pb CI"
B. Na", NO,
C. Pb", NO,
D. Na", C
Q7. The correct order of increasing in the first ionization energy:
A. B< Be < N<O
B. Be <B<N< O
C.B< Be <0< N
D. B<O< Be <N
Q8. What is the A of light that is emitted when an excited electron in the hydrogen atom falls from n = 7 to n
=47
A. 4.45 x 10 m
B. 2.16 x 10* m
C. 9.18 x 10 m
D. 2.16 x 10' m
Transcribed Image Text:Q4. What is the frequency (s) of radiation that has a wavelength of 459 nm? A. 6.54 x 104 B. 6.54 x 10" C) 1.53 x 10' D. 18 x 10' Q5. Which one of the following is not a redox reaction? A. 2H,0to > 2H,0 + Oz) B. Ni + 3H → 2NH C. BaClyeo + K,CrO > BaCroi + KCl D. 2Al + Fe,O→ Al,Oa + 2Fe Q6. What are the reacting ions when Pb(NO,), and NaCl react in aqueous solution? A. Pb CI" B. Na", NO, C. Pb", NO, D. Na", C Q7. The correct order of increasing in the first ionization energy: A. B< Be < N<O B. Be <B<N< O C.B< Be <0< N D. B<O< Be <N Q8. What is the A of light that is emitted when an excited electron in the hydrogen atom falls from n = 7 to n =47 A. 4.45 x 10 m B. 2.16 x 10* m C. 9.18 x 10 m D. 2.16 x 10' m
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