A) S
B) P
C) Ga
D) Li
E) Br
Correct Answer
verified
Multiple Choice
A) G.N.Lewis.
B) John Newlands.
C) Dmitri Mendeleev.
D) J.J.Thompson.
E) Ernest Rutherford.
Correct Answer
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Multiple Choice
A) the discovery of the periodic law.
B) the determination of the charge of the proton.
C) the measurement of the atomic numbers of the elements.
D) the scientist who determined the electric charge of the electron.
E) the discovery of the law of octaves.
Correct Answer
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Multiple Choice
A) Ca
B) Si
C) Al
D) Se
E) P
Correct Answer
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Multiple Choice
A) row 4, group 4A
B) row 4, group 5A
C) row 5, group 4A
D) row 5, group 5A
E) none of the above
Correct Answer
verified
Multiple Choice
A) nuclear binding energy.
B) number of neutrons.
C) atomic mass.
D) atomic number.
E) atomic size.
Correct Answer
verified
True/False
Correct Answer
verified
Multiple Choice
A) 1006 kJ/mol.
B) greater than 1006 kJ/mol.
C) less than 1006 kJ/mol.
D) is equal to the electron affinity of mercury.
E) is equal to the second ionization energy of mercury.
Correct Answer
verified
Multiple Choice
A) X has a larger electron affinity than Y does.
B) X has a larger effective nuclear charge than Y does.
C) X has greater metallic character than Y does.
D) X has a larger first ionization energy than Y does.
E) X is a poorer conductor of electricity than Y when in the solid state.
Correct Answer
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Multiple Choice
A) Mn2+ and Ar
B) Zn2+ and Cu2+
C) Na+ and K+
D) Cl- and S
E) K+ and Cl-
Correct Answer
verified
Multiple Choice
A) an s orbital.
B) an s or p orbital.
C) a d orbital.
D) a p or d orbital.
E) an f orbital.
Correct Answer
verified
Multiple Choice
A) 2nd
B) 3rd
C) 4th
D) 5th
E) 6th
Correct Answer
verified
True/False
Correct Answer
verified
Multiple Choice
A) Ca2+ and Fe3+
B) O2- and F
C) F and Cl-
D) Cl- and Ca2+
E) None of the above.
Correct Answer
verified
Essay
Correct Answer
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View Answer
Multiple Choice
A) P4O10
B) MgO
C) Fe2O3
D) K2O
E) Cr2O3
Correct Answer
verified
Short Answer
Correct Answer
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Multiple Choice
A) NO2
B) H2O
C) Na2O
D) SnO
E) SO2
Correct Answer
verified
Multiple Choice
A) Br
B) Se
C) Ni
D) As
E) Si
Correct Answer
verified
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