What is group 1 and 2 on the periodic table called?
The elements in group 1 are known as the alkali metals; those in group 2 are the alkaline earth metals; those in 15 are the pnictogens; those in 16 are the chalcogens; those in 17 are the halogens; and those in 18 are the noble gases.
What is group 1 on the periodic table called?
Group 1A (or IA) of the periodic table are the alkali metals: hydrogen (H), lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). The alkali metals have only one valence electron in their highest-energy orbitals (ns1).
Are group 1 and 2 on the periodic table reactive?
The outermost electrons of the alkaline earth metals (group 2) are more difficult to remove than the outer electron of the alkali metals, leading to the group 2 metals being less reactive than those in group 1.
What’s group 2 on the periodic table called?
alkaline earth metals
Group 2A (or IIA) of the periodic table are the alkaline earth metals: beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).
What is Group 18 on the periodic table called?
Noble gas
Noble gas, any of the seven chemical elements that make up Group 18 (VIIIa) of the periodic table. The elements are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn), and oganesson (Og).
What is group 0 on the periodic table called?
the noble gases
Group 0 contains non-metal elements placed in the vertical column on the far right of the periodic table . The elements in group 0 are called the noble gases . They exist as single atoms .
Why does Group 7 get less reactive?
Reactivity decreases down the group. This is because group 7 elements react by gaining an electron. As you move down the group, the amount of electron shielding increases, meaning that the electron is less attracted to the nucleus.
What is the biggest group on the periodic table?
Group 1
Group 1(H, Li, Na, K, Rb, Cs, Fr) is the longest group in the periodic table. The first group is called the alkali metals group.
What is Group 3/12 called?
the transition metals
The elements in groups 3-12 are called the transition metals.
Where are the Group 1 elements on the periodic table?
The Group 1 elements are called the alkali metals. They are placed in the vertical column on the left-hand side of the periodic table. All the Group 1 elements are very reactive. They must be stored under oil to keep air and water away from them.
What are the names of Group 2 elements?
Group 2 elements are: 1 Beryllium 2 Magnesium 3 Calcium 4 Strontium 5 Barium 6 Radium
Where does hydrogen rank on the periodic table?
Although hydrogen is placed at the top of Group 1A in most versions of the periodic table, it is very different from the other members of the alkali metal group. In its elemental form, hydrogen is a colorless, odorless, extremely flammable gas at room temperature, consisting of diatomic molecules of H 2.
Why are Group 1 elements called alkali metals?
All the Group 1 elements are very reactive. They must be stored under oil to keep air and water away from them. Group 1 elements form alkaline solutions when they react with water, which is why they are called alkali metals. previous. 1.