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Paha777 [63]
3 years ago
12

How many planets are there?

Physics
2 answers:
Y_Kistochka [10]3 years ago
4 0

Answer:

There are eight planets in our Solar System.

Explanation:

malfutka [58]3 years ago
4 0

Answer:

8

Explanation:

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

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mart [117]

No, that's silly.

You've got your Pfund series where electrons fall down to the 5th level,
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3 years ago
Which statement correctly describes the reactivity of noble gases, according to the octet rule? Their atoms have eight electrons
Kipish [7]

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Explanation:

The octet rule state that atoms tend to complete their last energy levels with eight electrons, and that this configuration make them very stable and unreactive.

Noble gases are characterized as unreactive atoms, and this is associated with the fact that they have a complete valence shell, it means that they have eight electrons on it (they follow the octet rule).

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BARSIC [14]
The outer shell can hold 1 electron
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