The metals of Group 2 from top to bottom are ...

ICSE Class 10 Chemistry 2015 Paper

Answer the following questions :

Question : 32 of 85

Marks: +1, -0

The metals of Group 2 from top to bottom are

\mathrm{Be}, \mathrm{Mg}, \mathrm{Ca}, \mathrm{Sr}

and

\mathrm{Ba}

(1) Which one of these elements will form ions most readily and why ?

(2) State the common feature in the electronic configuration of all these elements.

Solution:

1. Barium will form ions most readily because it is most metallic and lose electrons readily and form positive ion.

2. All these elements have 2 valence electrons.

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