How many protons does rubidium 85 have?
					Category: 
					science
					chemistry
				
				
			37 protons
 
Similarly one may ask, how many protons neutrons and electrons does rubidium 87 contain?
An electron has very little mass by comparison, protons have a positive charge, electrons have a negative charge, and neutrons-none. The nucleus of 87Rb contains 37 protons(p) and 50 neutrons(n).
Regarding this, how many electrons does RB 85?
Fact box
| Group | 1 | 39.30°C, 102.74°F, 312.45 K | 
|---|---|---|
| Block | s | 1.53 | 
| Atomic number | 37 | 85.468 | 
| State at 20°C | Solid | 85Rb, 87Rb | 
| Electron configuration | [Kr] 5s1 | 7440-17-7 | 
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