Activity 1 Atomic radii and ionic radii are found in the IB data booklet. Explain why: (a) the potassium ion is much smaller than the potassium atom. (b) there is a large increase in ionic radius from silicon (Si4+ ) to phosphorus (P3-). (c) the ionic radius of Na* is less than that of F-. What is the order of decreasing radii for the species Cl, Cl, and Cl-? Which one of the following elements has the highest electronegativity? A Be B CI C Ca D Br

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Chapter1: Chemical Foundations
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Activity
Atomic radii and ionic radii are found in the IB data booklet.
Explain why:
(a) the potassium ion is much smaller than the potassium atom.
(b) there is a large increase in ionic radius from silicon (Si4+) to
phosphorus (P3-).
(c) the ionic radius of Na* is less than that of F.
What is the order of decreasing radii for the species Cl, Cl*,
and Cl-?
2
Which one of the following elements has the highest
electronegativity?
A Be
B CI
C Ca
D Br
Transcribed Image Text:Activity Atomic radii and ionic radii are found in the IB data booklet. Explain why: (a) the potassium ion is much smaller than the potassium atom. (b) there is a large increase in ionic radius from silicon (Si4+) to phosphorus (P3-). (c) the ionic radius of Na* is less than that of F. What is the order of decreasing radii for the species Cl, Cl*, and Cl-? 2 Which one of the following elements has the highest electronegativity? A Be B CI C Ca D Br
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