Beryllium is the first element in group 2 of the periodic table. calcium is the third element in the same group. which statement is true of both of their ions?

   

both of their ions will have a charge of +1.

 

   

both of their ions will have a charge of +2.

 

   

the charge on a calcium ion will be greater than the charge on a beryllium ion.

 

   

both of their ions will have a charge of -2.

 

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- You have to understand the overall concept

Elements in group 2 have 2 electrons in their outer shell and would lose 2 electrons to form 2+ions.

If you think about it, it makes sense.

An element itself has no charge as the number of protons and electrons but if it loses 2 electrons, it will have 2 more protons than electrons.

In short, your answer is 'both of their ions will have a charge of +2'

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i need mutiple choices

14 days is the half-life of phosphorus-32