The Atom
Which subatomic particles make up the atomic mass?
What is the neutrons and protons.
Write the isotope symbol for the information below:
10 protons
9 neutrons
10 electrons
What is:
19 Ne
10
What is the name given to an ion with a positive charge?
Cation
As you move across a period, what happens to the atomic radius and why?
The atomic radius decreases because there are more protons (greater nuclear pull).
The creator of the Periodic Table
Who is Dmitri Mendeleev
This number represents the number of protons in an atom.
What is the atomic number
How many neutrons does potassium-40 have?
What is 21.
Complete this sentence: Anions are typically formed by ___________ and have a negative charge due to the _____________ of electrons.
Non-metals, gaining
What is the term for the amount of energy to remove an electron?
What is ionization energy?
This group of elements belongs to the family that has 7 valence electrons.
Who are the halogens.
Which subatomic particle(s) are found in the nucleus?
Protons and neutrons
Write the isotope name for the following:
33 protons
41 neutrons
33 electrons
What is Arsenic-74
What is the charge of an atom with 17 protons and 20 electrons?
3-
As you move down a group, what is the trend for electron affinity and why?
The electron affinity decreases because there is more electron orbitals. (harder for the nucleus to attract electrons)
What do atoms of elements that are in the same group have in common?
They contain the same number of valence electrons.
A subatomic particle that has about the same mass as a proton.
What is a neutron.
Find the following for the isotope: Cobalt-59.
mass:
protons:
neutrons:
electrons:
What is:
mass: 59
protons: 27
neutrons: 32
electrons: 27
How many electrons are in an atom of Mg2+?
10 electrons
Which element has the greatest atomic radius?
What is Fr.
These elements are dull, brittle and poor conductors of electricity.
What are non-metals (located on the right side)
Isotopes of an element contain different numbers of what subatomic particle?
What are neutrons.
Find the following for Iodine-126
mass:
protons:
neutrons:
electrons:
What is:
mass: 126
protons: 53
neutrons: 73
electrons: 53
How many protons and electrons are in an atom of S2-?
16 protons and 18 electrons
Which family on the periodic table has no electronegativity? Why?
What is the noble gases because they already have a full outer ring.
How many groups are on the Periodic Table
What is 18