English chemist who first proposed an organized scheme for the elements
Who is John Newlands
An example of a Non-metal
What is carbon, Nitrogen, Oxygen, Sulfur, Hydrogen, or Halogens
The configuration of 2s2s2p6
What is Neon
Atoms tend to gain, lose, or share electrons in order to acquire a a full set of eight valence electrons.
What is the Octet rule.
English chemist that discovered atoms of each element contain a unique number of protons
Who is Henry Moseley
Which block contains 5 orbitals
What is P
D block contains ? orbitals
what is 5 orbitals
Indication of how strongly an atom's nucleus holds onto it's valence electrons.
What is Ionization energy.
English chemist who arranged elements in order of increasing atomic number
Who is Henry Moseley
A similar chemical property from Fe (iron)
What is Ni(nickel), Co(cobalt), or Cr(chromium)
2s22p1 is apart of ? block
what is s block
1s22s226+
What is positive sodium ions.
German chemist who arranged elements in increasing atomic mass
Who is Lother Meyer
Are often referred to as the main group on the periodic table
What is representative elements
The highest level in an atom
what Is valence electron
1s22s22p63s1
What is a sodium atom.
Russian chemist who demonstrated a connection between atomic mass and properties of chemicals
Who is Dmitri Mendeleev
According to the periodic table, which two elements have an atomic mass less than twice their atomic number
What is Hydrogen and Helium
5s24d105p5 is the configuration of what group and period
what is Period 5 and Group 17
what is 8.64 x 10-19