1.

The scientific method is the procedure for systematic observation of natural phenomena with a set structure for formulating, testing, and evaluating hypotheses. A. Galileo Galilei B. Johannes Kepler C. Isaac Newton D. Francis Bacon

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ong>ANSWER:

This type of defect occurs in highly ionic compounds which have high co-ordination number and CATIONS and anions of similar sizes. e.g., NaCl, KCl, CsCl and KBR etc. (c) FRENKEL defect: This type of defect arises when an ion is missing from its lattice site and occupies an interstitial position.

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