A piece of metal A and a piece of Metal B are placed on identical hot plates at identical settings. Metal B gets hot to the touch faster than metal A. What must be true?

A. Metal A has higher specific heat than Metal B

B. Metal B has higher specific heat than metal A

C. The metals both have low specific heats

D. Metal A has a lower specific heat than Metal B

E. The metals both have high specific heats

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2 Jun 2021

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Octahedral complexes containing period 5 or 6 metal centers, or high oxidation numbers, are less kinetically labile than complexes of period 4 metals or metals with lower oxidation numbers. Assuming these reactions proceed via a dissociative mechanism, select the reason for this. Select all that apply.
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c. Metal ions with low oxidation numbers form bonds to ligands that have more covalent character than those formed by metal ions with high oxidation numbers.

d. Period 5 and 6 d-block metals have larger ionic radii than period 4 d-block metals, resulting in a sterically crowded transition state.

Which of the following statements does not follow from the fact that the alkali metals have relatively weak metal–metal bonding?
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(b) The alkali metals are soft enough to be cut with a knife.
(c) The alkali metals are more reactive than other metals.
(d) The alkali metals have higher melting points than other metals.
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