What is the trend in reactivity in Group 1 with water?

All the alkali metals react vigorously with cold water. In each reaction, hydrogen gas is given off and the metal hydroxide is produced. The speed and violence of the reaction increases as you go down the group. This shows that the reactivity of the alkali metals increases as you go down Group 1.

Which Group 1 element reacts most vigorously with water?

Sodium is the alkali element that reacts most violently with water.

What is the order of reactivity in Group 1?

The increasing order of reactivity among group 1 elements is Li < Na < K < Rb is F > CI > Br > I. Explain. In group 1 elements (alkali metals) the reactivity of the metals is mainly due to the electron releasing tendency of their atoms, which is related to ionisation enthalpy.

What group is very reactive to water?

alkali metals
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 is the reactivity of group 2?

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 is the word equation for the reaction of group 1 metals and water?

All of these metals react vigorously or even explosively with cold water. In each case, a solution of the metal hydroxide is produced together with hydrogen gas. This equation applies to any of these metals and water – just replace the X by the symbol you want….

	enthalpy change (kJ / mol)
Li	-222
Na	-184
K	-196
Rb	-195

Why does reactivity increase down group1?

The reactivity of Group 1 elements increases as you go down the group because: the outer electron gets further from the nucleus as you go down the group. the attraction between the nucleus and outer electron gets weaker as you go down the group – so the electron is more easily lost.

Which one of the following elements is least reactive with water?

The correct answer is Option 2, i.e Sodium. Comparing the net enthalpy changes each element, we conclude that Sodium reacts the least when compared with other elements with water.

Which is the most reactive in Group 1?

francium
Reactivity of Group 1 Elements 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. Because alkali metals are so reactive, they are found in nature only in combination with other elements.

Why does reactivity increase down Group 1?

What is the reactivity in Group 7?

The non-metal elements in Group 7 – known as the halogens – get less reactive as you go down the group. This is the opposite trend to that seen in the alkali metals in Group 1 of the periodic table . Fluorine is the most reactive element of all in Group 7.

What is the reactivity of Group 7?

What is the reactivity of Group 1 elements with water?

Reactivity of group 1 elements with water Reactivity of metals increase when going down the group. That means sodium reacts so fast with water than lithium does. Like that, potassium reacts faster than sodium.

What is a group 1 element?

Group 1 – chemical reactions with water Atoms of group 1 elements all have one electron in their outer shell. This means that the alkali metals all have similar chemical properties. When a group 1…

What happens when a group 1 element takes part in reaction?

When a group 1 element takes part in a reaction, its atoms each lose one electron. This forms positively charged ions. The ions have a stable arrangement of electrons, with a complete outer shell.

What are the factors affecting the reactivity of alkali metals?

1 Alkali metals with water – products. Alkali metals react with water and emit hydrogen gas and form relevant metal hydroxides. 2 Reactivity of group 1 elements with water. Reactivity of metals increase when going down the group. 3 Heat of reaction. These reactions of group 1 metals and water are exothermic reactions.