Im not sure but i think its 350. I really hope im right
Answer:
All matter consists of indivisible particles called atoms. Atoms of the same element are similar in shape and mass, but differ from the atoms of other elements. Atoms cannot be created or destroyed. Atoms of different elements may combine with each other in a fixed, simple, whole number ratios to form compound atoms.
Explanation:
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Cadium
Down a period, atomic radii decrease from left to right due to the increase in the number of protons and electrons across a period.
