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\(\text{Cl}_2 > \text{Br}_2 > \text{F}_2 > \text{I}_2\)
Fโ has an anomalously low bond energy (158 kJ/mol) due to lone pair repulsion in the small F atom, making \(\text{Cl}_2\) stronger. So the order \(\text{F}_2 > \text{Cl}_2\) for bond dissociation energy is incorrect.
All other options are correct: oxidising power, acid strength of HX in water, and electronegativity all follow the stated orders.
Long-term corticosteroid therapy mimics endogenous excess cortisol, producing iatrogenic Cushing's Syndrome:
| System | Effect of Excess Corticosteroids |
|---|---|
| Metabolic | Hyperglycemia (steroid-induced diabetes) |
| Appearance | Moon face, buffalo hump, central obesity, striae |
| Skeletal | Osteoporosis, vertebral fractures |
| Immune | Immunosuppression โ increased infection risk (mask fever!) |
| Cardiovascular | Hypertension, fluid retention, edema |
| Electrolytes | Hypokalemia, hypernatremia |
| GI | Peptic ulcer formation |
Critical nursing point: Patients on long-term steroids should never abruptly stop โ risk of adrenal crisis (Addisonian crisis). Taper dosage gradually.
Draft loss for year: $320. Adjustments needed: (1) Irrecoverable debts of $930 recovered; (2) Existing allowance $520, required allowance = 5% of trade receivables $9,600. What is the revised profit or loss?
Option D (Profit of $650) is correct.
Recovery of debt: +$930
Required allowance = 5% × $9,600 = $480; Reduction = $520 − $480 = +$40
Revised = −$320 + $930 + $40 = +$650 profit
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