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How many protons are in Cesium-135 (Cs)? A. 35 B. 55 C. 80 D. 195
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How many protons are in Cesium-135 (Cs)?

A. 35
B. 55
C. 80
D. 195

User Kolen
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1 Answer

8 votes
B.55

Caesium is a soft alkali metal, the melting point of 28.5 c makes it only one of five elemental metals that are liquid.
User Shay Anderson
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