Table of Contents
What 2 groups on the periodic table are most reactive?
Reactivity of Group 1 Elements Hydrogen is a very reactive gas, and the alkali metals are even more reactive. In fact, they are the most reactive metals and, along with the elements in group 17, are the most reactive of all elements.
What are the 2 least reactive groups on the periodic table?
Explanation: The reactivity of an element can be determined by looking at the electron configuration of the element. The least reactive elements are those who have a full outermost valence shell ie they have 8 electrons in the outer shell so elements such as helium, neon, radon or the transition elements.
Why are groups 1 and 2 the most reactive?
The First Group Elements in the same group of the periodic table have the same number of valence electrons. These are the electrons in their outer energy level that can be involved in chemical reactions. All the elements in group 1 have just one valence electron. This makes them very reactive.
What are the reactive groups on the periodic table?
The alkali metals, found in group 1 of the periodic table, are highly reactive metals that do not occur freely in nature. These metals have only one electron in their outer shell. Therefore, they are ready to lose that one electron in ionic bonding with other elements.
Which group on the periodic table is the most stable?
noble gases
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 group on the periodic table is non reactive?
Inert Gases
Group 8A — The Noble or Inert Gases. Group 8A (or VIIIA) of the periodic table are the noble gases or inert gases: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). The name comes from the fact that these elements are virtually unreactive towards other elements or compounds.
Which is more reactive N or NE?
Which is more reactive N or NE? As we can see from the electronic configurations, neon has a fully filled outer shell and hence is non-reactive. Hence, it is much easier for oxygen to complete its octet, as compared to nitrogen and that is why, oxygen is more reactive than nitrogen.
Which family on the periodic table is the most reactive?
alkali metals
The family that contains the most reactive metals are the alkali metals.
Is Group 1 or group 2 more 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. These elements easily form compounds in which the metals exhibit an oxidation state of 2+.
Why is group 2 reactive?
Reactivity of Group II elements increases down the group. This can be explained by the increase in ease at losing two outer electrons as we descend the group. The loss of electrons becomes easier due to the decreasing ionisation energy required.
What two elements have 3 shells?
Electrons
| Atomic Number | Element | Energy Levels or “shells” |
|---|---|---|
| 13 | Aluminum (Al) | 3 |
| 14 | Silicon (Si) | 4 |
| 15 | Phosphorus (P) | 5 |
| 16 | Sulfur (S) | 6 |
What is the most stable element?
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. Therefore, they rarely react with other elements since they are already stable.