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Rudik [331]
3 years ago
13

Atoms are made of subatomic particles called protons, electrons and neutrons. What is true about the number of protons and elect

rons in a
stable atom?


A. the number of protons and electrons are equal

B. there are less protons than electrons

C. there are more protons than electrons
Chemistry
1 answer:
netineya [11]3 years ago
4 0
A. The number of protons are always the same as electrons.
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What happens when an electron moves from a high energy level to a lower one? it absorbs light it emits light it disappears it ge
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Answer: The correct answer is it emits light.

Explanation:

When an electron is present in ground level that is the lower energy level and moves to the higher energy level, the energy is provided to the electron which means that it absorbs light. This is known as absorption.

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Hence, the correct answer is it emits light.

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I will give Brainliest!!! What kind of atoms makeup C12H22O11?
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Which of the subshells below do not exist due to the constraints upon the angular momentum quantum number?A) 2dB) 2sC) 2pD) all
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Answer:

  • Option A): <em>Due to the constraints upton the angular momentum quantum number, the subshell </em><u><em>2d</em></u><em> does not exist.</em>

Explanation:

The <em>angular momentum quantum number</em>, identified with the letter l (lowercase L),  number is the second quantum number.

This number identifies the shape of the orbital or <em>kind of subshell</em>.

The possible values of the angular momentum quantum number, l, are constrained by the value of the principal quantum number n: l can take values from 0 to n - 1.

So, you can use this guide:

Principal quantum   Angular momentum         Shape of the orbital

number, n                 quantum number, l

         1                                      0                             s

         2                                     0, 1                          s, p

         3                                     0, 1, 2                      s, p, d

Hence,

  • <u>the subshell 2d (n = 2, l = 2) is not feasible</u>.

  • 2s (option B) is possible: n = 2, l = 0

  • 2p (option C) is possible: n = 2, l = 1

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