write the properties of elements of alkali metals, alkaline earth metals, halogens and noble gases groups.
Answers
Explanation:
alkali metals:
shiny.
soft.
silvery.
highly reactive at standard temperature and pressure.
readily lose their outermost electron to form
cations with a charge of +1.
alkaline earth metals
shiny.
silvery-white.
somewhat reactive metals at standard
temperature and pressure.
readily lose their two outermost electrons to form
cations with a 2+ charge.
low densities.
low melting points.
low boiling points.
halogens and noble gases
Halogen, any of the six nonmetallic elements that constitute Group 17 (Group VIIa) of the periodic table. The halogen elements are fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At), and tennessine (Ts). They were given the name halogen, from the Greek roots hal- (“salt”) and -gen (“to produce”), because they all produce sodium salts of similar properties, of which sodium chloride—table salt, or halite
Answer:
hope it helps u
Explanation:
1.The alkali metals are a group of chemical elements in the periodic table with the following physical and chemical properties:
shiny.
soft.
silvery.
highly reactive at standard temperature and pressure.
readily lose their outermost electron to form cations with a charge of +1.
2.Properties of Alkaline Earth Metals
shiny.
silvery-white.
somewhat reactive metals at standard temperature and pressure.
readily lose their two outermost electrons to form cations with a 2+ charge.
low densities.
low melting points.
low boiling points.
3.Halogens and noble gases are two different groups of elements that can be seen on the periodic table. Halogens are found in group 17 and include fluorine, chlorine, bromine, iodine and astatine. Noble gases make up group 18, and include helium, neon, argon, krypton, xenon and radon.