
(a)
Interpretation:
Chemical formula of the potassium iodide has to be given.
Concept Introduction:
Chemical formula: Elements forms compound in order to attain stability. A compound contains two or more atoms at definite proportion and it can be represented using chemical formula. Chemical formula gives information about the number of each atoms present in the compound and is represented using
Octet rule: It states that those atoms having eight electrons in their valance shell will be more stable.
(b)
Interpretation:
Mechanism for protecting the thyroid gland from radiation by potassium iodide tablet has to be explained.
Concept Introduction:
Thyroid gland takes iodine from food and converts that to thyroid hormones which are required for various
(c)
Interpretation:
The duration of the effectiveness of the potassium iodide tablet has to be noted.
Concept Introduction:
Thyroid gland takes iodine from food and converts that to thyroid hormones which are required for various metabolic activities. Taking of potassium iodide tablet during the exposure to radioactive iodine, helps to prevent the risk of thyroid cancer.
(d)
Interpretation:
Are potassium iodide tablets expensive or not has to be observed.
Concept Introduction:
Thyroid gland takes iodine from food and converts that to thyroid hormones which are required for various metabolic activities. Taking of potassium iodide tablet during the exposure to radioactive iodine, helps to prevent the risk of thyroid cancer.

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Chapter 7 Solutions
Chemistry in Context
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