Explain why Ra is larger than Be. With 2 points.

Explanation:

Radium(Ra)=>

atomic number=88

BERYLLIUM (Be)=>

atomic number =4

why is Ra larger than Be

1. since the atomic number of Ra is greater than Be, the number of electrons is more, which means there are more number of shells present in Ra than Be. (atomic Radius)2. the more the valence electron (excluding fully filled ones) the less is the nuclear attraction forcesince Ra has more valence electron in its outermost shell, the nuclear attraction force is less which means that Ra 's size is greater than Be.

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