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mash [69]
3 years ago
15

How many electrons are in the outer energy level of group 17(7A) atoms?

Physics
1 answer:
Andre45 [30]3 years ago
3 0
7 electrons. Take for example fluorine. It’s electronic configuration is 2:7
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Determine the gain in the potential energy when a 8.0 kg box is raised 17.2 m.
Marysya12 [62]

Answer:

<h2>The answer is 1376 J</h2>

Explanation:

The potential energy of a body can be found by using the formula

PE = mgh

where

m is the mass

h is the height

g is the acceleration due to gravity which is 10 m/s²

From the question we have

PE = 8 × 10 × 17.2

We have the final answer as

<h3>1376 J</h3>

Hope this helps you

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