A) Sr
B) Rb
C) Na
D) Ca
Correct Answer
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Multiple Choice
A) alkaline earth metals
B) group 3A elements
C) halogens
D) noble gases
Correct Answer
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Multiple Choice
A) pictures (a) and (b)
B) pictures (a) and (d)
C) pictures (b) and (c)
D) pictures (b) and (d)
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Multiple Choice
A) electrolysis of the molten metal oxides.
B) electrolysis of the molten metal halides.
C) chemical reduction of the metal oxides with aluminium.
D) chemical reduction of the metal halides with oxygen.
Correct Answer
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Multiple Choice
A) Be
B) Ca
C) Ba
D) Sr
Correct Answer
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Multiple Choice
A) A
B) B
C) A or B
D) C or D
Correct Answer
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Multiple Choice
A) H2(g) + Cl2(g) → 2 HCl(g)
B) Fe(s) + F2(g) → FeF2(s)
C) Br2(l) + 2 Cl-(aq) → 2 Br-(aq) + Cl2(g)
D) I2(s) + 3 Cl2(g) → 2 ICl3(s)
Correct Answer
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Multiple Choice
A) NaCl
B) MgO
C) AlF3
D) Al2O3
Correct Answer
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Multiple Choice
A) C4-
B) P3-
C) O2-
D) Mg+
Correct Answer
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Multiple Choice
A) Cl
B) F
C) O
D) S
Correct Answer
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Multiple Choice
A) O(g) → O+(g) + e-
B) O+(g) → O2+(g) + e-
C) F(g) → F+(g) + e-
D) F+(g) → F2+(g) + e-
Correct Answer
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Multiple Choice
A) Ca(s) + Cl2(g) → CaCl2(s)
B) 2 Ca(s) + 2 H2O(l) → 2 Ca(OH) 2(aq) + H2(g)
C) 6 Ca(s) + 2 N2(g) → 2 Ca3N2(s)
D) Ca(s) + O2(g) → CaO2(s)
Correct Answer
verified
Multiple Choice
A) picture (a)
B) picture (b)
C) picture (c)
D) picture (d)
Correct Answer
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Multiple Choice
A) LiCl
B) NaCl
C) KCl
D) RbCl
Correct Answer
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Multiple Choice
A) A
B) B
C) C
D) D
Correct Answer
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Multiple Choice
A) period 3;group 3A
B) period 3;group 5A
C) period 4;group 3A
D) period 4;group 5A
Correct Answer
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Multiple Choice
A) BeBr(s)
B) BeBr2(s)
C) Be2Br(s)
D) BeBr3(s)
Correct Answer
verified
Multiple Choice
A) A
B) B
C) C
D) D
Correct Answer
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Multiple Choice
A) picture (a)
B) picture (b)
C) picture (c)
D) picture (d)
Correct Answer
verified
Multiple Choice
A) NaH and HCl
B) only HCl
C) only NaCl
D) only NaH
Correct Answer
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