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maw [93]
2 years ago
11

Anions are formed when *

Chemistry
1 answer:
soldier1979 [14.2K]2 years ago
6 0
Anions are negative ions so it’s when an atom gains electrons
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What does the 4 indicate in 1s22s22p4? 4th subshell 4 electrons 4th energy level
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Answer: The number 4 indicates 4 electrons.

Explanation: We are given an electronic configuration, which is:

1s^22s^22p^4

Here,

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  • The numbers written before the letters which are 1, 2 and 2 represents the Principle Quantum Number and these represents the energy level of the sub-shells.
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Hence, 4 indicates 4 electrons present in 2p sub-shell.

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3 years ago
3k+aici3 3kci+ai is what type of reaction
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