2
Some elements are stable on their own because they have a complete outer energy level. These elements are called noble gases. Hydrogen and Helium have a complete energy level with two electrons and all of the other elements are stable with eight. When an element doesn't have a complete outer energy level it is stable in a compound. This is because it is being combined with another element to complete it's energy level.
the octet rule does
the amount of times the number being divided by the other number goes in to the other number!
It is 15
Yes, by every other number.
Valence electron are found in the outer shell of an atom. Depending on the number of valence electrons, the atom is more or less stable: fewer => less stable and more => more stable (inert). Stable = less likely to react with other atoms.
In mathematics a product is the result of multiplying two or more numbers together so you cannot have the product of 8. You can ask what is the product of 8 and 10, or 8 and 1 etc The product of 8 and 6 is 8x6 = 48
If the other number is not a multiple of 5, the LCM is the product of 5 and the other number.
The fluorine atom gains one electron to achieve a stable electron configuration, resulting in a full valence shell of electrons. This transforms it into a fluoride ion, which is stable and unreactive.
31
The other number is 5.
It means it can divide into the other number evenly with no remainder.