Which of the following is used at the tips of match stick:
Correct answer: A. K2Cr2O7 + S + White P
- A. K2Cr2O7 + S + White P
- B. K2Cr2O7 + K + S
- C. S and K
- D. Sb2S3
Explanation
The head of a match uses antimony trisulfide for fuel. Potassium chlorate helps that fuel burn and is basically the key to ignition, while ammonium phosphate prevents the match from smoking too much when it's extinguished. Wax helps the flame travel down the matchstick and glue holds all the stuff together.
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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.
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