Metals.
no
In the context of chemistry, "4s" refers to the 4th energy level (shell) and the s orbital within that energy level. The "y" is not a standard scientific notation or symbol, so it is unclear what it represents in this context. If you provide more information or context, I can offer a more specific explanation.
the form of an expression compossed of products of factors, rather than sums or differences of terms. the expressions x(x-2) and (x+3)(x+4) are in factored form. y=(x-2)(x+5), or factored form, is an equation that describes a parabola. Once factored, using a FOIL method, it becomes standard form. y=(x-2)(x+5) y=x^2+5x-2x-10 y=x^2+3x-10
Not really. You can imagine a 3-d object being made up of a lot of 2-d objects stacked on top of one another. But remember that, by definition, a 2-d object has no thickness (or, in this case, height). Height of one 2-d obect = 0 so height of n such objects = n*0 = 0 So a stack, no matter how many objects you use, will remain 0. And so you are not building up a 3-d object. Alternatively, you could imagine a cube (3-d) being built up from 6 square faces (2-d). Except that this is just the shell of the 3-d object, not the 3-d object itself.
there are four electrons on the outer shell of carbon..
Atoms whose outer shell is filled have eight valence electrons and belong to Group XVIII. This group is known as the noble gases.
Stable atoms.
Neon does not usually form bonds with other atoms because it has a full outer electron shell and is stable.
the electrons on their outer shell, all atoms want to gain a full valence shell.
Such atoms belong to a group in the periodic table of elements.
a stable compound
The noble gases
Atoms with eight electrons in their outer shell (a full valence shell) are considered stable and less likely to react with other atoms to form molecules. However, there are exceptions to this rule such as noble gases like helium, neon, and argon.
The outer-most shell of an atom is called the valence shell. It is involved in forming chemical bonds with other atoms.
The outer shell of an atom is called the valence shell. It contains the valence electrons, which are involved in forming chemical bonds with other atoms.
Ionic bonding is when atoms either give away or take electrons. You do not need an outer shell.