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Most of an atom consists of empty space. Its mass is concentrated in its center, which is called the

1 answer:

6 0

Answer:

Most of an atom consists of empty space. Its mass is concentrated in its center, which is called the nucleus. The nucleus consists of protons and neutrons.

Explanation:

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Match each element to the number of electrons in its valence shell

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Answer: Be= 2, C =4, Li = 1 and B=3

Explanation:

The valence shell can be define as the outermost shell of an atom that contains the valence electrons.

Beryllium (Be), electronic configuration; 1s2 2s2, = 2 electrons in its valence shell.

Carbon (C), electronic configuration; 1s2 2s2 2p2, = 4 electrons in its valence shell.

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Boron (B) , electronic configuration; 1s2 2s2 2p1 = 3 electron in its valence shell.

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How many electrons in an atom can share the quantum numbers n = 4 and l = 3?

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$\boxed{\text{14}}$

Explanation:

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Each orbital can hold two electrons, so the f subshell can hold 14 electrons.

$\boxed{\textbf{14 electrons}} \text{ can share the quantum numbers n = 4 and l = 3.}$

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