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How many protons and electrons are present in br ion

Multiple Choice Questions

1. Iron has a density of 7.86 g/cm³. The volume occupied by 55.85 g of iron is:

2. Which pair of elements would be most likely to form an ionic compound?
P and Br
Cu and K
C and O
O and Zn
Al and Rb

3. Which is the formula for the binary compound of potassium and nitrogen?
KN
K₂N
NK₂
K₃N
NK₃

4. On the average an atom of uranium (U) is approximately how many times heavier than an atom of potassium?
6.1 times
4.8 times
2.4 times
12.5 times
7.7 times

5. How many protons and electrons are present in a Br^- ion?
35 p, 35 e
80 p, 81 e
35 p, 34 e
35 p, 36 e
80 p, 34 e

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Chemistry: How many protons and electrons are present in br ion

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