25. which of the following statements is true for
the element sulfur?
a it has 17 neutrons
b it has more electrons than argon
c its symbol is su
d it has 6 electrons on its third energy level

Sulfur's atomic number is 16, meaning it has 16 protons and 16 electrons. This also rules out the statement "it has 17 neutrons". This also rules out the second statement "it has more electrons than argon". Argon's atomic number is 18, telling us it has 18 electrons and 18 protons. Of course, 16 is less than 18, so argon has more. Sulfur's atomic symbol is S, not Su, which doesn't even represent an element at all. This leaves us with the last statement "it has 6 electrons on its third energy level." This is true, as Sulfur does indeed have 6 electrons filling its third energy level.

14,16 18 reacts with group

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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