Why do groups 1 and 2 in the periodic table react easily?

Answer 1

The elements in group one and two react so easily because they have only one or two valence electrons, and the non metals, want those electrons.

These group elements loose 1 or 2 electron to be stable instead of gaining 6 or 7 to complete the outer shell attain stable electronic configuration of a noble gas.

Answer 2

Group 1 elements have one valence electrons. If this one electron is lost, they get stable noble gas configuration (octet of electrons). Hence they are reactive.
Group 7 elements have seven valence electrons. If they gain one electron, they get the stable noble gas configuration. Hence they are reactive.

Answer 3

Groups 1 and 2 in the Periodic Table react easily because they have one or two electrons in their outermost energy level, making them highly reactive. These elements readily lose these electrons to achieve a stable electron configuration, which leads to the formation of positive ions.

Answer 4

They can easily achieve their stable noble gas electron configuration by giving up 1 or 2 electrons.

Answer 5

Ionization energies are low. Easy to pull a electron off of them.

Answer 6

They have only one or two electrons to lose which makes it very energetically favorable.