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21
"Paramagnetism" is the property of
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Answer & Solution
Answer: Option C
Solution:
Paramagnetism is due to the presence of unpaired electrons in the material, so most atoms with incompletely filled atomic orbitals are paramagnetic, although exceptions such as copper exist.
22
The structure of NaCl crystal is
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Answer & Solution
Answer: Option B
Solution:
The structure of NaCl crystal is face centered cubic.