The ionic radius of the fluoride ion is:
Correct answer: C. 136 pm
- A. 72 pm
- B. 95 pm
- C. 136 pm
- D. 157 pm
Explanation
The atomic radius of fluorine is 72pm, but when an electron is added, the affective nuclear charge decreases so the ionic radius of an anion is always greater than the atomic radius for fluoride, it is 136pm. Key point: fluoride is the anion of fluorine.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About s-Block and p-Block Elements
The s and p blocks are studied through their valence-shell configurations, periodic trends and characteristic chemical properties. Work covers the reactions of Group I and Group II elements, the behaviour of Group IV elements, and how atomic size, ionization energy, electronegativity and metallic character change across periods and down groups.
Practise s-Block and p-Block Elements
1,359 free s-Block and p-Block Elements MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More s-Block and p-Block Elements questions
Melting points of Group II-A elements are higher than those of Group I-A because:
The nature of an aqueous solution of ammonia (NH3) is:
Alkaline earth metal oxides react with water to give hydroxides. The solubility of alkaline earth metal oxides in water increases as we move from top to bottom in a group. Which of the following alkaline earth metal oxides is least soluble in water?
2NaOH(aq) + Cl2(g) → NaCl + NaClO + H2O proceed at:
Which halogen molecule, "X2," has the lowest dissociation energy?
Which one of the following is an anhydride of sulfuric acid?