What is true of electrons? Select all that is true

Question

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The mass of an electron is about 1 amu
Electrons are located on orbitals or in the electron cloud
Electrons are located in the nucleus
Electrons are virtually weightless
Electrons dictate what elements will chemically bond or not

Answer 1

Here are the true statements about electrons from the options provided:

1. Electrons are located on orbitals or in the electron cloud - This statement is true. Electrons exist in regions of space around the nucleus of an atom known as orbitals or an electron cloud.

2. Electrons are virtually weightless - This statement is also true in a practical sense. The mass of an electron is very small (approximately 0.0005 amu), and for many applications, it can be considered negligible compared to protons and neutrons.

3. Electrons dictate what elements will chemically bond or not - This is true as well. The arrangement and behavior of electrons, particularly the valence electrons, determine how and whether atoms will bond with each other in chemical reactions.

The following statements are false:

• The mass of an electron is about 1 amu - This is false; the mass of an electron is approximately 0.0005 amu (or about 1/1836 of a proton).

• Electrons are located in the nucleus - This is false; electrons are not located in the nucleus. They are found in orbitals surrounding the nucleus.

So the true statements are:

• Electrons are located on orbitals or in the electron cloud
• Electrons are virtually weightless
• Electrons dictate what elements will chemically bond or not