MCQ
Incorrect statements among the following is/are
- A$2^{nd}$ electron gain enthalpy is always endothermic
- BElectronegativity is the property of bonding atoms
- ✓$Al_2O_3$ and $BeO$ are amphoteric oxide
- DNone of these are incorrect
✓
Answer
Correct option: C.
$Al_2O_3$ and $BeO$ are amphoteric oxide
c
In a period the value of ionisation potential increases from left to right with breaks where the atoms have some what stable configuration. In this case $N$ has half filled stable orbital. Hence has highest ionisation energy. Thus the correct order is $B < C < O < N$ not $B < C < N < O$
In a period the value of ionisation potential increases from left to right with breaks where the atoms have some what stable configuration. In this case $N$ has half filled stable orbital. Hence has highest ionisation energy. Thus the correct order is $B < C < O < N$ not $B < C < N < O$
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