Topic 4 Atomic Structure Flashcards
What is the charge on a proton ?
The charge on a proton is +1
What is the charge on an electron ?
The charge on an electron is -1
What is the weight of an electron ?
The weight of an electron is 1/1840
Where are electrons found ?
Electrons are found in shells
What subatomic particles are found in the nucleus ?
Protons and neutrons are found in the nucleus
What is the atomic number ?
The number of protons in an atom
Which element has atoms without any neutrons ?
Hydrogen
What is the mass number ?
The mass number is the number of protons and neutrons in an atom
In a neutral atom how do we find the number of electrons ?
It will be the same as the number of protons
If potassium has an atomic number of 19, how many protons does it have ?
19 - as atomic number is the number of protons which is the same as the number of electrons
Oxygen has 8 protons and a mass number of 16. How many neutrons does it have ?
8 neutrons
Definition of an atom
The smallest particle in an element
What is the electronic configuration of Na?
2,8,1
