Chemistry - CHEMICAL BONDING Question with Solution | TestHub
ChemistryCHEMICAL BONDINGIntroduction, ValencyMedium2 minQB
ChemistryMediuminteger
Which of the following has value for valence electron is less than 3.0
Cl, F, Li, H, B, C, N, K, O, Be, Ba, Sr, Fe
Answer:
5
Solution:
The (shielding constant) for valence electrons is calculated using Slater's rules. For H, Li, Be, B, C, N, O, F, K, Cl, Ba, Sr, Fe, the values are:
H: 0 Li: 1.7 Be: 2.05 B: 2.40
C: 2.75 N: 3.10 O: 3.45 F: 3.80
K: 8.8 Cl: 10.9 Ba: 21.9 Sr: 18.9
Fe: 21.2
The elements with less than 3.0 are H, Li, Be, B, C.
Stream:JEESubject:ChemistryTopic:CHEMICAL BONDINGSubtopic:Introduction, Valency
⏱ 2mℹ️ Source: QB
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