s2p2
One orbital - 6s which can hold 2 electrons.
On the periodic table, there are periods that are rows, and groups that are columns. Elements in the same group react like the other elements in the group.
A couple of different cases could be made here, but the most obvious one is that silicon is the odd element out. The element magnesium is in Group 2, which is the Alkaline Earth metals. Both aluminum and lead are Poor Metals, and silicon is a Metalloid. The operative word for the first three elements is metal. And silicon is not one. Use the link below to see the really cool periodic table posted at Wikipedia. Note that this table is interactive, and each element is a hyperlink to the Wikipedia post on that element. Bookmark this bad boy!
Pureness is in the eye of the beholder. But monocrystaline minerals could be considered "pure" as could anything consisting of just one element or one compound.
You can't. An element is the simplest form that anything can be broken down into.
It's chromium. The element would have lost 2 electrons from the 4s subshell, leaving 3d4 as your valence.
You can differentiate between a 2s and a 2p subshell based on their shape. The 2s subshell is spherically symmetric and has one orbital. On the other hand, the 2p subshell has a dumbbell shape and consists of three orbitals: px, py, and pz, each oriented along separate axes.
A subshell that contains eight electrons is the 3d subshell. The d subshell can hold a maximum of 10 electrons, but in this case, with eight electrons, it is likely filled with a combination of spin-up and spin-down electrons. Other subshells, such as p (which can hold a maximum of 6 electrons) or s (which can hold a maximum of 2 electrons), cannot contain eight electrons.
You could draw a simplified representation of an atom with its nucleus and electron shells, or a diagram showing the water cycle to represent the element of water. Another idea could be a simple illustration of a chemical reaction to showcase how elements interact with each other.
You would see which group the element was in and then replace it with another element from the same group, as all elements in a group have similar properties. For example you could replace Sodium with Potassium as they are both in Group 1.
No, there is no element that has the symbol Q.
No amendment could change equal representation in the senate without
It could be Cobalt Ferrum erat. It was Iron.(Fe)
You can determine what element an atom is by it's amount of sub-atomic particles and their positions. Every element has a different amount of electrons, so that is the easiest way to determine what type an atom is. If you wanted to determine it more broadly, for example, which group an element was in, you could just count the amount of electrons in the outer shell, as each group is unique in this way.
It does nothing. It consists of the first five digits of pi. It could be the representation of a date in the US style. It does nothing. It consists of the first five digits of pi. It could be the representation of a date in the US style. It does nothing. It consists of the first five digits of pi. It could be the representation of a date in the US style. It does nothing. It consists of the first five digits of pi. It could be the representation of a date in the US style.
Not usually, but it could be an element of a set.
No element in Group II is a liquid at room temperature. The only elements that are liquid at room temperature are bromine, which is in Group VII, and mercury, which is a transition metal and Lord only knows how your book defines those, but it's almost certainly NOT Group II. (It could, conceivably, be Group IIB, though the whole thing of group numbers is one of the stupider concepts in chemistry, especially since there are at least three mutually incompatible ways of defining them.)