All of the following are members of Group 14 elements except ______.
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In a Born -Haber cycle, the sequence of reactions occurs as ____________.
A. Gaseous atoms-element-gaseous ion-compounds-
B. Gaseous atom -gaseous ions-element-compound
C. Elements-gaseous atoms-gaseous ions-compound
D. Elements-gaseous ions-gaseous atoms-compound
Answer: C
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_____ bond involves an overlap of the electron clouds from each atom .
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Why does the atomic size of an atom decrease across a period from left to right?
A. Because across a period atomic number increases, the higher the atomic number the more strongly will the electrons be drawn toward the nucleus, and the smaller the atom
B. Because across a period atomic mass increases
C. Because across a period atomic number decreases, the lesser the atomic number, the smaller the atom
D. Because across a period atomic mass decreases
Answer: A
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The effect of increasing strong attraction of the electrons to the nucleus makes the electrons _______.
A. Become closer to the nucleus and more tightly bound to it
B. Mix up with the nucleus
C. Weak, hence easily removed from the atom
D. Highly reactive
Answer: A
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Electrons of the outermost shell experience increasingly strong nuclear attraction because of ____________.
A. Addition of electrons one at a time moving from left to right across a period
B. Addition of electrons one at a time moving down the group
C. Increasing atomic size across the period
D. Increasing atomic size down the group
Answer: A
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Reactivities of the halogens declines as we _______________.
A. Go up the group
B. Go down the group
C. None of the above
D. A ll of the above
Answer: B
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Aluminium oxide apart from dissolving in acids also dissolve in bases, it is therefore ________
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The oxides of Group 13 dissolve in acids so, they may be considered ____________.
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__________ is not a member of Group 13 element.
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