You may use your electronegativity values in Section 8 of the IB data booklet, determine the bonding in methane (CH4)
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15
Formulate an equation for the reaction of magnesium oxide with water.
MgO(s) + H2O(l) --> Mg(OH)2
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15
Which element is this: [Kr]5s1 4d10
Ag (silver)
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15
Ethanoic or acetic acid, CH3COOH, is a weak acid that is often used in the creation of vinegar.Note the two distinctly different bonds between carbon (C) and oxygen (O). Which option contains the correct information of these bonds?
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20
What is the condensed electron configuration of the Fe2+ ion?
[Ar]3d6
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20
How many unpaired electrons does chlorine have in its ground state?
[Ne]3s23p5 so just ONE (1)
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15
Which of these periodic trends is a man-made number?
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15
What is the product of Cl2(g) + KI(aq) --> ?
Cl2(g) + 2KI(aq) --> I2 (s) + 2KCl(aq)
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15
How many electrons in a Cl- ion?
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20
Which of the following will have similar properties to 1s2 2s2 2p6 3s2 3p2?
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10
The __________ electrons are in the outermost principal quantum level of an atom
valence
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15
For the set of elements Li, O, Ne, and Na, which element has the largest atomic radius?
