Question

(a) There is an increase in density from titanium to
copper. Why?

(b) The greatest number of oxidation states are
exhibited by the members in the middle of
transition series. Explain.
​

Answer 1

Answer:

(a). Ti = 22, Cu = 29) Atomic size gradually decreases from left to right across a period of elements. ... Hence from Ti to Cu as atomic size decreases, the density of the element increases.

(b). This is because unpaired valence electrons are unstable and eager to bond with other chemical species.) Therefore, the oxidation states would be the highest in the very middle of the transition metal periods due to the presence of the highest number of unpaired valence electrons.

Explanation:

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Answer 2

(a) Ti = 22, Cu = 29) Atomic size gradually decreases from left to right across a period of elements. ... Hence from Ti to Cu as atomic size decreases, the density of the element increases.

(b) This is because unpaired valence electrons are unstable and eager to bond with other chemical species.) Therefore, the oxidation states would be the highest in the very middle of the transition metal periods due to the presence of the highest number of unpaired valence electrons.

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