The oxidation number of all metals on the periodic table have a positive (+) charge. Which of these BEST explains why?
A) Metals are known to add protons to their nuclei causing them to become positively charged.
B) All metals lose one or more valence electrons to become stable, giving them a positive oxidation number.
C) All metals gain one or more valence electrons to become stable, giving them a positive oxidation number.
D) Metals are known to lose protons and add neutrons to their nuclei causing them to become positively charged.

Option B) All metals lose one or more valence electrons to become stable, giving them a positive oxidation number.

Explanation:

Yes! metals such as cadmium, sodium, aluminum etc all lose their outermost electrons to nonmetals in chemical reactions to become stable (having an octet or duplet structure), and forming a positively charged ion.

For instance: To form sodium chloride, NaCl Sodium Na, loses its single outermost electron to Chlorine

Na --> Na+ + e-

Thus, Na+ means sodium has a positive oxidation number of +1, and is with a octet stable structure of (2,8) instead of (2,8,1)

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.

metric time was an attempt to create a standard unit of time based off of 10, but it never took off an is not included in the metric system (si)