The characteristics of two different types of reactions are shown below: Reaction A: Protons are gained or lost by the atom of an element.
Reaction B: The identity of the reacting element does not change.
Which statement is true about the two reactions?
a
Valence electrons are not involved in both Reaction A and Reaction B.
ob
Valence electrons are involved in Reaction B but not in Reaction A.
с
Valence electrons are involved in both Reaction A and Reaction B.
d
Valence electrons are involved in Reaction A but not in Reaction B.

no, the red giant is the hottest with 2.00.000.000 degrees celsius. while the white dwarf only 25,000 degrees celsius.

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.

if it's not useful, feel free to report for mistake in answer.