How does the reactivity change as you move down group 1 of the periodic table?

Answer 1

The ionozation energy (or ionization potential) is the key. This is the energy required to remove electrons from the neutral atom. More precisely: Ionization energy of an atom or molecule is the energy required to remove one mole of electrons from one mole of isolated gaseous atoms or ions. If you examine the ionization energies of the elements in a group you notice that it is lower as you go down the group (top to bottom) from Lithim to Caesium... This means less energy is rquired to remove electrons from Caesium than from Lithium and hence, Caesium will react more easily than Lithium under the same conditions. This is generally the opposite as you move left to right in the Periodic Table ; i.e. the ionization energies increase from left to right in general in each row. == It turns out that ionization energies, which are so well explained above, only measure reactivity. The reasonthat Group 1 elements (and Group 2, for that matter) become more reactive as you go down the column is because of electron screening that occurs to a greater extent in the elements with higher atomic numbers.

Answer 2

Group 1 and group 7 are both metals, but group 1 consists of elements with just one electron in their outer shell, which allows that electron to easily be given up in a chemical reaction, while group 7 is in the transition state element section, and consists of elements with incomplete inner shells, which still donate electrons but not as easily as the elements of Group 1.

Answer 3

As you go down the group, energy levels are being added with each period, and the valence electron is farther away from the nucleus, and is therefore held less tightly. So it is easier for the single electron to be removed, forming a positively charged ion of 1+.

Answer 4

Reactivity increases as you move down Group 1 of the periodic table. This is because the outermost electron is further away from the nucleus, leading to a weaker attraction between the electron and the nucleus, making it easier for the atom to lose that electron and react with other substances.

Answer 5

Rate of reactivity increases down the group. It is easy to lose electrons when the number of shells increase.

Answer 6

The electronegativity is higher down.

Answer 7

The reactivity increases down a group.