Atomic Structure and Ion Charges

This video tutorial from Mumu Math and Science explores the atomic structure of various elements, including carbon, hydrogen, chlorine, magnesium, silver, and a sulfur isotope. It explains how to determine the atomic number, number of protons, neutrons, and electrons, as well as the mass number. The tutorial also covers the concept of ions and how charges affect the number of electrons. Each element is analyzed step-by-step to illustrate these concepts, providing a clear understanding of atomic structure.

What does the atomic number of an element represent?

• The mass number

• The number of neutrons

• The number of protons

• The number of electrons

How do you calculate the number of neutrons in an atom?

• Add the atomic number to the mass number

• Subtract the atomic number from the mass number

• Multiply the atomic number by the mass number

• Divide the mass number by the atomic number

For a neutral atom, how do the number of protons and electrons compare?

• They are equal

• Protons are half the electrons

• Electrons are double the protons

• Protons are double the electrons

What is unique about hydrogen's atomic structure?

• It has no protons

• It has no neutrons

• It has no electrons

• It has a negative charge

How many electrons does a hydrogen ion with a +1 charge have?

• Zero

• Three

• Two

• One

What is the charge of a chlorine ion with 18 electrons and 17 protons?

• +2

• 0

• -1

• +1

How many neutrons are in a chlorine atom with a mass number of 35?

• 19

• 20

• 18

• 17

What is the electron count for a magnesium ion with a +2 charge?

• 8

• 14

• 10

• 12

How do you determine the number of neutrons in an isotope with a mass number of 34 and an atomic number of 16?

• Add the atomic number to the mass number

• Subtract the atomic number from the mass number

• Divide the mass number by the atomic number

• Multiply the atomic number by the mass number

What is the mass number of an isotope with 16 protons and 18 neutrons?

• 32

• 30

• 34

• 36