0
Why are group 1 metals dull on the outside but shiny on the inside?
Wiki User
∙ 13y ago
because of high alkalinity and reactivity, these metals react with oxygen (or other gases) and form a dull layer over them. The inner part remaining protected against gases look shiny, but after sometime they also become dull.
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
What is the appearance of rubidium?
it is black coloured from outside and shiny from the inside
Are metals always shiny?
No. None of the Group 1 and Group 2 elements of the periodic table, the alkali and alkali earth metals respectively, stay shiny when exposed to air. They all react with moisture in air, and they tarnish quickly. A number of other metals will not stay shiny, either. Iron can be polished, but it will oxidize (rust) if left in air. Some metals will not react with air or the moisture in it, and some will. The results are mixed in that there are a lot of transition metals (Groups 3 through 12 on the periodic table), and each one would have to be evaluated independently (or with its "group mates") to discover if it would stay shiny. Links are provided to some relevant Wikipedia articles. The links are to the groups of metals, and each element in the Group chart is a hyperlink to that element. It should make it easy to do a quick search of the metals to get a complete answer, if that is what is desired.
What makes silver shiny?
the fact that it is a metal and has the properties of metals. something being shiny means that it has luster, and luster is a property of metals.
What are very soft shiny metals with low melting points?
Alkali Metals
What are the groups of elements of shiny?
transition metals
What group of elements are soft silver-white and shiny metals?
These are the alkali metals.
Which element group is made up of shiny solids that are harder than alkali metals?
the alkaline earth metals
What do group 1 metals look like?
In their pure state, shiny and lustrous
What is the appearance of rubidium?
it is black coloured from outside and shiny from the inside
Are all non-metals shiny?
Non-metals are not normally shiny.
What is the shiny appearance of metals?
There are quite a few metals that are shiny including gold. Silver and titanium are also metals that are shiny when polished.
Are alkali metals shiny gray solids soft?
yes if you cut inside it you will see all of this descriptions
Does non metals have shiny appearances?
It depends on the element. Some metals have very un-shiny appearences, and some non-metals are very reflective.
Are metals always shiny?
No. None of the Group 1 and Group 2 elements of the periodic table, the alkali and alkali earth metals respectively, stay shiny when exposed to air. They all react with moisture in air, and they tarnish quickly. A number of other metals will not stay shiny, either. Iron can be polished, but it will oxidize (rust) if left in air. Some metals will not react with air or the moisture in it, and some will. The results are mixed in that there are a lot of transition metals (Groups 3 through 12 on the periodic table), and each one would have to be evaluated independently (or with its "group mates") to discover if it would stay shiny. Links are provided to some relevant Wikipedia articles. The links are to the groups of metals, and each element in the Group chart is a hyperlink to that element. It should make it easy to do a quick search of the metals to get a complete answer, if that is what is desired.
What metal container will maintain heat longer shiny inside and outside or shiny inside and black outside?
If your container is mirror finish on both sides, it will be a better insulator.There is a thermal concept known as emissivity, which is closely related to the inverse of reflectivity.
What similarities exist among the shells diagrams for the alkali metals?
They down in a verticle column. this is representing a family or group of chemicals lol
Is a shiny a metals?
Yes, it is.
