Subatomic Particles & Bohr Model
This particle carries a negative charge and orbits around the outside of the nucleus
What is an electron?
An atom turns into an ion specifically when it gains or loses these subatomic particles.
What are electrons?
Isotopes are atoms of the same element that have the same number of these particles but different numbers of these particles
What are protons and neutrons?
All atoms in a period have this in common.
What is the same number of energy levels (also known as shells)?
Oxygen has this many electrons in its outer shell.
What are 6 valence electrons?
In a neutral, uncharged atom, the number of negative electrons must exactly equal the number of these positive particles.
What are protons?
A particle with 33 protons, 15 neutrons and 35 electrons would have this symbol.
What is 48As2-?
This atom contains 35 protons and 45 neutrons?
What is Bromine-80?
As you move across a single row (period) from left to right, atomic radius changes in this way.
What is decreasing? (Atoms get smaller).
This Atom is located in period 3 and group 2.
What is Magnesium?
To find the overall mass number of an atom, you must add the total number of these two subatomic particles together.
What are protons and neutrons?
The proper name of a particle that has 16 protons and 18 electrons?
What is sulfide?
The decimal number listed under an element on the periodic table represents this "weighted" average of all its natural isotopes.
What is the relative atomic mass?
Going down a group, the atomic radius increases because each new row adds one of these to the atom.
What is an electron shell?
What is the electron configuration for Calcium (Ca)?
1s22s22p63s23p64s2
Draw the Bohr model of Cl-
8 electrons on the outer shell
If an ion has a 3+ charge and has 10 electrons. This is the identity of the element.
What is Aluminium
Copper has two main isotopes: Copper-63 and Copper-65. If the periodic table lists Copper's average atomic mass as 63.55 amu, this specific isotope is more abundant in nature.
What is Copper 63?
Atoms gain energy causing the electrons to become what?
Excited
What element has the electron configuration:
1s22s22p63s23p64s23d102p3
What is Arsenic?
When looking at a complete Bohr model for a neutral Lithium-7 atom, you will count 3 electrons in the outer rings, 3 protons in the nucleus, and this exact number of these particles also inside the nucleus.
What is 4 neutrons?
These atoms would likely form a form a cation with a charge of 2+.
What are group 2 atoms?
An unknown element has two naturally occurring isotopes. Isotope A has 10 neutrons and an abundance of 20%. Isotope B has 12 neutrons and an abundance of 80%. If the neutral atom has 11 protons, this is the calculated average atomic mass.
What is 22.6 amu?
How do electrons return to their ground state, once they have gained energy and jumped into a higher energy level?
They emit light
What is special about the noble gases and their valence electrons?
What is they have a full outer shell or full valence shell?