TS EAMCET · Chemistry · Classification of Elements and Periodicity in Properties
Atomic radius (pm) of \(\mathrm{Al}, \mathrm{Si}, \mathrm{N}\) and \(\mathrm{F}\) respectively is
- A \(117,143,64,74\)
- B \(143,117,74,64\)
- C \(143,47,64,74\)
- D \(64,74,117,143\)
Answer & Solution
Correct Answer
(B) \(143,117,74,64\)
Step-by-step Solution
Detailed explanation
\(\mathrm{Al}, \mathrm{Si}\) belory to \(3 \mathrm{rd}\) period of periodic table while \(\mathrm{N}_1\) and fluorine to second period. The size of element decreases from left to right in a period hence the order of size is \(\mathrm{Al}>\mathrm{Si}>\mathrm{N}>\mathrm{F}\)
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