What is the difference between noble gases and alkali metals?
Alkali metals are reactive, soft metals with low densities. Noble gases are all unreactive non-metals. The alkali metals show trends in physical properties down the group.
What is the difference between alkali metal and alkaline earth metal?
The main difference between alkali metals and alkaline earth metals is that alkali metals have one valence electron in the outermost orbit whereas alkaline earth metals have two valence electrons in the outermost orbit.
How is an alkali metal different from a halogen?
Alkali metals are soft and reactive metals. Alkali metals are all solid and the melting point decrease as they get bigger. Halogens can be solid, liquid, gaseous at room temperature and the melting point increase when they get bigger.
What do alkali metals halogens and noble gases have in common?
They are metals the are soft, easy to cut(you could cut it with a knife), and shiny. These metals are also highly reactive to water, so they can catch on fire and explode.
What are noble and alkali metals?
They are grouped together because they all behave similarly (except with different ferocity) and together form Group 1 of the periodic table. They are all in fact very soft metals that can be cut with a knife and have relatively low melting temperatures.
What are the properties of alkali metals?
Physical properties. The alkali metals have the high thermal and electrical conductivity, lustre, ductility, and malleability that are characteristic of metals. Each alkali metal atom has a single electron in its outermost shell. This valence electron is much more weakly bound than those in inner shells.
What is the difference between alkaline and alkali?
The term ‘Alkaline’ is used for the Alkaline Earth Metals in the Periodic Table of Elements. The words alkali and alkaline can mean the same thing if you use them it in a non-chemical conversation. Basically, alkali is the noun while alkaline is the adjective.
What are the characteristics of alkali metals?
The alkali metals have the high thermal and electrical conductivity, lustre, ductility, and malleability that are characteristic of metals. Each alkali metal atom has a single electron in its outermost shell. This valence electron is much more weakly bound than those in inner shells.
What is the difference between halogen and noble gas?
Explanation: Halogens are very reactive because they have seven valence electrons and need one more to have eight valence electrons (an octet). The noble gases have filled valence shells as they occur in nature. Helium has a duet of valence electrons, and the rest of the noble gases have an octet.
What is different about the alkali metals?
As a group, the alkali metals have a looser crystallographic arrangement than any of the other metallic crystals, and cesium—because of its greater atomic weight—has an interatomic distance that is greater than that of any other metal.
What are some properties of the alkali metals?
What do the alkali metals all have in common?
Alkali metals share many similar properties including: They are shiny, soft, metals. They are very reactive. They all have one valence electron in the outermost shell which they seek to lose in order to have a full outer shell.
How are noble gases different from alkali metals?
Noble gases are unreactive. Alkali metals (with one valence electrons) are more reactive than alkaline earth metals (with two valence electrons). How many electrons away from a noble gas are the alkali metals?
How are alkali metals different from other metals?
Alkaline earth metals are in the second group of the periodic table. Alkali metals have the electronic configuration of [Noble gas] ns1 while Alkaline earth metals have, [Noble gas] ns2 electronic configuration. With regard to the valency of these metals, all alkali metals have an electron in their outermost shell.
Which is more reactive alkali metals or halogens?
Alkaline earth metals are like alkali metals but are less reactive. The can burn when heated and are what we use for fireworks. Halogens are non-metals and are also highly reactive. The six noble gases are the most stable and unreactive elements on the whole periodic table. The are also colourless tasteless and non-toxic.
Where are alkali metals found on the periodic table?
The alkali metals are the elements present in the first group of the periodic table. They are Lithium (Li), Sodium(Na), Potassium (K), Rubidium (Rb), Cesium (Cs) and Francium (Fr). They are all metals and very reactive therefore none of these metals do not occur as free metals in nature.