LRA 211 - Chapter 2 | Latest Update | 2024/2025 | Graded A+

LRA 211 - Chapter 2 | Latest Update | 2024/2025 | Graded A+ Negatively charged Electrons No electrical charge/neutral Neutrons Characteristic of matter Electrical charge When an atom has an equal number of protons and electrons No net charge When an atom gains an extra electron and the negative charges outnumber the positives, resulting in a net negative charge Negative ion When an atom loses an extra electron and the positive charges outnumber the negatives, resulting in a net positive charge Positive ion Force that holds the nucleus together and holds electrons in orbit around the nucleus Binding energy Key determinates of x-ray production Nuclear binding energy & electron binding energy Two types of atomic interactions in the x-ray tube that produce x-rays Characteristic & bremsstrahlung A defined energy level at a distance from the nucleus within which electrons orbit Electron shell Shell nearest to the nucleus K shell Basic building block of matter composed of electrons, protons & neutrons Atom Most often associated with the earliest atomic theory Leucippus Leucippus's student who is credited with formalizing the earliest atomic theory Democritus of Abdera Theorized that the nature of the object depended on its atoms Democritus of Abdera Developed a sound atomic theory based on scientific evidence John Dalton Advanced Dalton's work by organizing the known elements