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  •  Identify the incorrect statement.Option: 1 Alkali metal readily lose electron to give unipositive <img alt="M^{+}" src="https://entrancecorner.

 Identify the incorrect statement.

Option: 1

Alkali metal readily lose electron to give unipositive M^{+} ions.


Option: 2

The electropositive character of alkali metals decreases down the group.


Option: 3

Alkali metals are strong reducing agents.


Option: 4

Cesium is the most reactive among alkali metals.


Answers (1)

best_answer

Alkali metal have only 1 valence shell electron. So, they tend to readily lose 1 electron to attain noble gas electronic configuration and give unipositive M^{+} ions. Since, they readily lose electron, they are strong reducing agents.

As we move down the group, the electropositive character of alkali metal increase because the size of element increase and nuclear charge decrease and thus required less energy to remove the electron from outermost shell.

The reactivity of alkali metals increases as we move down the group due to their larger size and low ionization enthalpy. Thus, Cs is highly reactive among alkali metals. 

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