Historical Development
He is generally considered the father of the periodic table
Who was Dmitri Mendeleev?
This is represented by the letter Z
What is the atomic number?
The electron configuration for He
What is 1s2?
Electronegativity values can be used to predict this
What is the type of bond that will form between two elements?
This happens to electrons in a covalent bond
What is they are shared?
John Newlands compared the repeating properties of elements to these
What are the notes on a musical scale?
Silicon is classified as this type of element
What is a metalloid?
Elements in the same group/family have the same number of these
What are electrons?
This causes atomic radius to decrease across a period
What is increased nuclear charge?
These kinds of elements are typically malleable and good conductors
What are metals?
Johann Doebereiner grouped elements into triads based on these
What are similar chemical properties
The difference between mass number and atomic mass
What is mass number refers to the number of protons and neutrons in a specific isotope of an atom and is always a whole number, while atomic mass is the weighted average of the masses of all the known isotopes of an atom and is usually not a whole number?
The number of valence electrons in a chlorine atom
What is 7?
This element has the highest electronegativity
What is fluorine?
Metallic bonding results in this arrangement of electrons
What is an electron sea?
This scientist is most responsible for arranging the periodic table by atomic number rather than atomic mass
Who was Henry Moseley?
Most elements are these
What are metals?
The electron configuration of tin (you may use noble gas notation)
What is 1s22s22p63s23p64s23d104p65s24d105p2 or [Kr] 5s24d105p2?
Ionization energy does this as you move down a group/family
What is it decreases?
This type of bond is most likely to form between two nonmetals
What is a covalent bond?
The modern periodic law states this
What is the properties of elements vary periodically with increasing atomic number?
The atomic number is the number of these particles in the nucleus of an atom
What are protons?
The electron configuration for aluminum
What is 1s22s22p63s23p1?
Ionization energy refers to this
What is the amount of energy required to remove an electron from an atom?
This happens to electrons when an ionic bond is formed
What is they are transferred from one element to another?