The elements of group II are known as al...

The elements of group II are known as alkaline earth metals. The electronic configuration of these elements . The electronic configuration of these elements is `ns^(2)` and oxidation state is `+2`. They have higher ionization energy than alkali metals in their respective period due to their small size and completely filled s-orbital. These elements give characteristic colour to bunsen flame. magnesium is used in the preparation of Grignard agent (RMgX) which is used in organic chemistry for preparation of sevaral organic compounds like alcohols. acids, hydrocarbons.
Q. The correct order of 1st ionization energy is

`Na lt Mg lt Al`

`Na lt Al lt Mg`

`Al lt Mg lt Na`

`Ag lt Na lt Mg`

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The correct Answer is:

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The elements of group II are known as alkaline earth metals. The electronic configuration of these elements . The electronic configuration of these elements is ns^(2) and oxidation state is +2 . They have higher ionization energy than alkali metals in their respective period due to their small size and completely filled s-orbital. These elements give characteristic colour to bunsen flame. magnesium is used in the preparation of Grignard agent (RMgX) which is used in organic chemistry for preparation of sevaral organic compounds like alcohols. acids, hydrocarbons. Q. The reaction of RMgX with water will produces

`MgX_(2)`

`Mg(OH)_(2)`

`MgXOH`

`H-X`

their oxides are alkaline

their hydrides are strongly alkaline

the metals are corroded by alkali

none of the above