Atomic Structure
This subatomic particle is found in the nucleus and has a neutral charge.
What is a neutron?
This ion has 12 protons, 10 electrons, and a charge of ___.
What is +2?
How do isotopes of an element differ from each other?
What is the number of neutrons?
What is the mass number?
The atomic number is equal to the number of this subatomic particle.
What are protons?
The number of electrons that can fill the first energy level.
What is 2?
This subatomic particle is directly related to an atom's identity.
What is a proton?
Lead-208 has this many neutrons.
What is 126?
If an element has two isotopes with masses of 10 amu and 12 amu, and the average atomic mass is 11 amu, what is the abundance of the heavier isotope?
What is 50%?
The numbers of this particle are ordered by energy level on the periodic table.
What are electrons?
An atom of carbon has this many electrons in its second energy level.
What is 4?
The electron is a subatomic particle that orbits the nucleus and has a _______ charge.
What is negative?
The mass number of an oxygen isotope with 7 neutrons.
What is 15?
If an isotope has a relative abundance of 60% for 16O and 40% for 18O, what is the average atomic mass of oxygen?
What is 16(0.60) + 18(0.40) = 16.8 amu?
This number represents the average abundance of all isotopes of an element.
What is average atomic mass?
An ion of nitrogen has ____ electrons in its second energy level if its overall charge is -3.
What is 8?
These two particles are responsible for an atom's mass number.
Protons and neutrons.
A sulfur ion with a charge of negative two (-2) has ____ protons and ____ electrons.
What are 16 and 18?
If an element has 90% of its atoms as 12C and 10% as 14C, what is the weighted average atomic mass of the element?
What is 12(0.90) + 14(0.10)= 12.2 amu?
This element has 47 protons.
What is silver (Ag)?
The second and third energy levels can hold this many electrons.
What is 8?
This makes up the majority of an atom's overall size.
What is empty space?
Atoms of this element often has zero neutrons.
What is Hydrogen?
An element has three isotopes: Isotope A with a mass of 10 amu and abundance of 20%, Isotope B with a mass of 11 amu and abundance of 50%, and Isotope C with a mass of 12 amu. What is the average atomic mass of the element?
What is 10(0.20) + 11(0.50) + 12(0.30) = 11.1 amu?
This is the symbol for Tin.
What is Sn?
An atom of Chlorine has _, _, and _ electrons in each energy level respectively.
What is 2, 8, 7?