Table of Contents
- 1 What element reacts with water and hydrogen?
- 2 What alkali metals are highly reactive?
- 3 What are highly reactive elements?
- 4 Which alkali metal is least reactive?
- 5 How do you know potassium an alkali metal is highly reactive?
- 6 Which metal reacts most strongly with water?
- 7 Why are metals placed above hydrogen in the reactivity series?
- 8 What kind of reaction can a metal have with hot water?
- 9 Which is the most reactive element in the elementary group?
What element reacts with water and hydrogen?
Most alkali metals and alkaline earth metals react with water to produce hydrogen. The alkali metals comprise Group 1 of the periodic table, and include lithium, sodium, potassium, rubidium, cesium and francium.
What alkali metals are highly reactive?
The reactivity of alkali metals increases from the top to the bottom of the group, so lithium (Li) is the least reactive alkali metal and francium (Fr) is the most reactive.
What are highly reactive elements?
The halogens, alkali metals, and alkaline earth metals are highly reactive.
- The most reactive element is fluorine, the first element in the halogen group.
- The most reactive metal is francium, the last alkali metal (and most expensive element).
- The least reactive elements are the noble gases.
Which alkali metal reacts most vigorously with water?
Sodium
Sodium is the alkali element that reacts most violently with water.
Which element reacts with water?
Reactivity series of metals
| Order of reactivity | Metal | Reactions with water or steam |
|---|---|---|
| Second most reactive | sodium (Na) | Vigorous reaction with cold water |
| Third most reactive | calcium (Ca) | Less vigorous reaction with cold water |
| Least reactive | magnesium (Mg) | Slow reaction with cold water, vigorous with hot water |
Which alkali metal is least reactive?
lithium
Concept: The alkali metals are soft and silvery. They are also the most reactive metals having the lowest ionization energies. They react readily with water, lithium being the least reactive and potassium the most.
How do you know potassium an alkali metal is highly reactive?
The alkali metals, Group 1A, are the most reactive metals because they have one valence or outer electron. They lose this electron very easily, forming ions with a charge of +1. This same strong reactivity because of one valence electron is true of potassium, as well.
Which metal reacts most strongly with water?
The alkali metals (Li, Na, K, Rb, Cs, and Fr) are the most reactive metals in the periodic table – they all react vigorously or even explosively with cold water, resulting in the displacement of hydrogen.
What metal reacts most vigorously with oxygen?
Sodium is the metal that reacts with oxygen and water vigorously.
Which is the best definition of a reactive metal?
– Definition from Corrosionpedia Definition – What does Reactive Metal mean? Reactive metal is a group of metal elements that can form a reaction with acids, water, mineral acids and powerful oxidizing acids. This group can be identified with the activity or reactivity series, which determines the most reactive metals from highest to lowest.
Why are metals placed above hydrogen in the reactivity series?
The metals placed above hydrogen in the series can displace it from acids such as HCl and H 2 SO 4 (since they are more reactive). Important uses of Reactivity Series Apart from providing insight into the properties and reactivities of the metals, the reactivity series has several other important applications.
What kind of reaction can a metal have with hot water?
These can react with hot water or cold water and form a steam with hydroxides and hydrogen gas. The next four metals, following the list from magnesium to chromium, are regarded as active metals that that can form a reaction with hot water or steam in order to produce hydrogen gas and oxides.
Which is the most reactive element in the elementary group?
The most reactive elementary group is alkali metals (situated far apart from intermediate metals and noble gases). Cesium is second from the bottom of this group, has 6 shells of electrons, and it matches the features of a reactive atom, making it the most reactive element. Are non-metals Reactive or non-reactive?