11 mark
Which element has the most exothermic electron affinity?
Mg
Br
Na
K
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Periodic Trends (College Board AP® Chemistry)
Exam Questions
4 mins4 questions21 mark
Which element has the smallest atomic radius?
Na
S
Mg
Cl
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31 mark
Various trends can be observed down groups and across periods in the Periodic Table. Which statement about these trends is true?
Ionization energy increases going down a group.
Atomic radius generally decreases across a period.
Electronegativity decreases across a period.
Electron affinity generally increases down a group.
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41 mark
Electrons removed | 1st | 2nd | 3rd | 4th | 5th |
Ionization energy / kJ mol-1 | 736 | 1450 | 7740 | 10500 | 13600 |
Successive ionization energies for an element, X, are shown in the table above.
What is the most likely formula for the ion of X?
X+
X2+
X3+
X4+
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