alkali metals
What are three properties of alkali metals?
What are the characteristics of alkaline earth metals?
What is the halogen group?
are located on the left of the noble gases on the periodic table. These five toxic, non-metallic elements make up Group 17 of the periodic table and consist of: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).
What makes a noble gas?
The noble gases are the chemical elements in group 18 of the periodic table. They are the most stable due to having the maximum number of valence electrons their outer shell can hold
What is transition metals in periodic table?
The main group elements include the active metals in the two columns on the extreme left of the periodic table and the metals, semimetals, and nonmetals in the six columns on the far right. The transition metals are the metallic elements that serve as a bridge, or transition, between the two sides of the table.
What are alkali metals give example?
are the six metals of Group 1 in the Periodic Table – lithium, sodium, potassium, rubidium, ceasium (cesium), and francium.
Why are they called the alkaline earth metals?
they are called alkaline earth metals because they form alkaline solutions (hydroxides) when they react with water . So basically, this term alkaline means that the solution has a pH greater than seven and is basic
Are halogens toxic?
are highly reactive, and as such can be harmful or lethal to biological organisms in sufficient quantities
What are the 6 noble gases?
The six noble gases that occur naturally are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and the radioactive radon (Rn).
What are three examples of transition metals?
Aluminum, Tin and Lead
Why are alkali metals useful?
They react strongly with water and because of this, they have to be stored in oil. Alkali metals are the first group in the periodic table. They are never found in nature uncombined because they are unstable and they react fast to other elements. They bond well with all elements except the noble gases.
What is the lightest element of the alkaline earth metals?
Calcium, atomic number 20, is the lightest alkaline earth metal, with a density of 1.55 g/cm3, lighter than both beryllium and calcium
What do halogens look like?
The halogens become darker as you go down the group
Can noble gases Bond?
All noble gases have full s and p outer electron shells (except helium, which has no p sublevel), and so do not form chemical compounds easily. Their high ionization energy and almost zero electron affinity explain their non-reactivity
What are some properties transition metals?
Where do alkali metals come from?
The word "alkali" received its name from the Arabic word "al qali," meaning "from ashes", which since these elements react with water to form hydroxide ions, creating alkaline solutions (pH>7)
What are the common alkaline earth metals?
They are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).
What are halogens in chemistry?
the halogens are five non-metallic elements found in group 17 of the periodic table. The term "halogen" means "salt-former" and compounds containing halogens are called "salts"
How do you find the noble gases?
All the noble gases are present in Earth's atmosphere and, except for helium and radon, their major commercial source is the air, from which they are obtained by liquefaction and fractional distillation
Why are transition metals called transition metals?
They are called the "inner transition metals." The transition elements are unique in that they can have an incomplete inner subshell allowing valence electrons in a shell other than the outer shell. Other elements only have valence electrons in their outer shell.