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devlian [24]
3 years ago
15

What family of elements has 7 valence electrons?

Physics
2 answers:
Anna35 [415]3 years ago
6 0

The elements in this family are fluorine, chlorine, bromine, iodine, and astatine. Halogens have 7 valence electrons, which explains why they are the most active non-metals. They are never found free in nature.

ivann1987 [24]3 years ago
4 0
Group 17 (VII) (halogens)
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Answer:

P_1 = 1166.7 Watt

P_2 = 2000 Watt

Explanation:

Average power for the human sprinter is given as

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3 years ago
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When a footballer collides with the goal post, the forces at work are the action and reaction forces. The player will exert an action force on the goal post, and then a reaction force from the goal post will stop the player. The reaction force call will cause pain and even injury to the player.
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Answer:

B

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A camera has a single converging lens with a fixed focal length f. (a) How far should the lens be from the film (or in a present
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Answer:

a) Due to the characteristic that a converging lens focuses light rays from infinity and parallel to its main axis. Therefore, the lens should be placed at a distance "f" from the film, in this way it will form the image of the object placed at infinity in said film.

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Explanation:

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