The presence of soluble fluoride ion upto 1 ppm concentration in drinking water, is:
p-Block Elements (Class 12) · Class 12 · JEE Main Previous Year Question
The presence of soluble fluoride ion upto 1 ppm concentration in drinking water, is:
- a
harmful for teeth
- b
harmful to skin
- c
harmful to bones
- d✓
safe for teeth
safe for teeth
Strategy: Use VSEPR theory to correlate formula to geometry.
Step 1: Structure Matching
- : Pyramidal (related to structure).
- : Square Planar.
- : Square Pyramidal (4 F in base, 1 O at apex, 1 LP).
- : Tetrahedral ( hybridization, no lone pairs).
Step 2: Conclusion Comparing the labels gives the matching set.
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