What factors do the valencies of transition elements depend upon? At least 2 points.

Explanation:

1. No of electrons present in d subshell.

2. comparable energy between( n-1)d sub shell and ns subshells.

n=no of shells.

electrons from (n-1)d subshells are lost as easily as from ns subshell.

chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

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