Topic 1- Atomic structure and the Periodic Table Flashcards
Radius of the nucleus
1X10^-14
What is the number above the element symbol
The mass number
What is the number below the element symbol
The atomic symbol
What does the atomic number tell you
The number of protons in an atom
What does the mass number tell you
The number of protons and neutrons in an atom
What decides the type of atom
The number of protons (atomic number)
What are isotopes
Different forms of the same element, with the same number of protons, but a different number of neutrons
Non-metal bonding
Covalent bonds (sharing electrons)
What ions do metal atoms form
Postitive ions (because they lose electrons)
Metal and non-metal bonding
Ionic bonds (Metal atom loses an electron and non-metal gains an electron)
What ions do non-metals form
Negative (because they gain an electron)