Cant really see the picture
The answer is- Magnitude of melting point of group 1A metals decreases down the group.
The melting point is the temperature at which a given solid material changes from a solid state to a liquid or melt state.
On what factors, the melting point of an atom depends?
- The melting point is governed by the attraction of the electrons of an atom towards its nucleus.
- Thus, size of the ion plays crucial role. Smaller the size of ion, greater is the attraction and thus greater is the melting point.
- Now, Group 1A elements are also called alkali metals and they include Lithium, Sodium, Potassium, Rubidium, Cesium, and Francium.
- As moving down the group, the size of atom increases , thus the attraction between the electrons and nucleus decreases, and thus the melting point decreases.
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<span>The anion is the same, it is the polyatomic anion nitrate (NO3^-1)
Side note: these are incorrect transitions of copper and nickel, it must explicitly be stated. Copper can be copper I or copper II in a compound. Nickel can be nickel I or nickel II.</span>
Answer is: Fluorine and chlorine, because they are both halogens.
Halogen elements are in group 17: fluorine (F), chlorine (Cl), bromine (Br) and iodine (I). They are very reactive and easily form many compounds.
In the gaseous state halogens form diatomic covalent molecules.
Halogen diatomic molecules (halogen means "salt producing") in the gaseous state in room temperature are fluorine (F₂) and chlorine (Cl₂).
Both molecules have single covalent bond and they are very reactive.
Halogens need to gain one electron to have electron cofiguration like next to it noble gas. For example, fluorine has 9 electrons and it gain easily one electron in chemical reaction to have electron configuration like noble gas neon (Ne) with 10 electrons.