Atomic Structure Flashcards
Allatoms of the same element have the same number of _______
Protons
Elements have the same number of Protons and _______
Electrons
In an element, the Protons and _______ are the same size
Neutrons
The relative size of neutrons and protons is _____
1
The relative size of electrons is _______
1/1840 or ~1/2000
When an atom gains or loses an electron it is called an ______
ion (more information in chapter 3)
When 2 atoms have the same number of protons, but a different amount of neutrons, it is called an _______
isotope
What is the atomic number of an element?
Number of Protons
What is the name for the number of protons and neutrons of an element
The mass number
What are the elements in the periodic table sorted by
Their atomic number
Where are protons located in an atom?
The Nucleus
Where are electrons located in an atom?
Energy Levels
Where are neutrons located in an atom?
The Nucleus
What are energy levels?
Orbits where electrons orbit around a nucleus
How many electrons can the first energy level fit
2
How many electrons can the second energy level fit
8
How many electrons can the third energy level fit
8
How many electrons can the fourth energy level fit
18
How many electrons can the fifth energy level fit (higher level)
18
How many electrons can the sixth energy level fit (higher level)
32
How many electrons can the seventh energy level fit (higher level)
32
What is the charge of Group 8 elements
0 (unreactive)
What is the scientific name for group 8 elements
Noble Gases
The columns of the periodic table are called ______
Groups
