Explain with 3 points why the element Ra is bigger than the element Be.

1. it has more valence shells

2. its position in the periodic table is lower than Be

3. its bigger in atomic mass

Explanation:

=)

explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.

it forms an anion that has a larger radius. anions have a negative charge and are larger than the original atom.