Periodic Trends
The effective nuclear charge of a valence electron in lithium
What is +1?
Elements in Menedeleev's periodic table were arranged by this
What is atomic mass?
The term describing the amount of energy transferred when a neutral atom gains an electron
What is electron affinity?
Lustrous, malleable, and ductile are characteristics of this major classification of elements
What are metals?
A bromine atom has 35 electrons, with electrons in this subshell experiencing the greatest effective nuclear charge
What is the 1s subshell?
The effective nuclear charge of a valence electron in oxygen
What is +6?
The method now used to arrange the elements in the modern day version of the periodic table
What is atomic number?
When written out, this is the equation that represents the 1st ionization energy of sodium
What is Na --> Na1+ + 1e- ?
Ionic compounds form when these types of elements combine
What are metals and nonmetals?
This group 6 element has the unique characteristic of forming allotropes
What is oxygen?
The direction on the periodic table in which bonding atomic radius typically increases
What is down and to the left?
Out of the following list of three elements, it is the one most likely to have physical and chemical properties similar to that of calcium: potassium, bromine, or barium
What is barium?
An added electron to the element selenium goes into this orbital
What is the 4p orbital?
Elements in this group on the periodic table have famously exothermic reactions with water, producing hydrogen gas and a resulting basic solution
What are alkali metals (group 1A)?
When written out, this is the ground state electron configuration of Ti2+
What is 1s22s22p63s23p63d2 ?
As one moves from left to right across the periodic table, electron affinity becomes this
What is more negative?
In the following list of chemical species, this is the one that is not part of an isoelectronic series along with the others: S2-, Ar, F1-, and Ca2+
What is F1-?
In forming a cation, Nickel would first lose electrons from this subshell
What is the 4s subshell?
Acidic oxides are a characteristic of this group of elements
What are nonmetals?
Dmitri Mendeleev's periodic table was not sorted by atomic number, as these had not yet been identified
What are subatomic particles (specifically protons)?
When arranged by metallic character, from least metallic to most metallic, this is the correct order for the following three elements: cesium, chlorine, tin
What is chlorine, tin, and cesium?
Of the following species, this is the one with the smallest radius: Se, Se2-, or Cl
What is Cl?
The following ionization energies belong to this element in period 3 of the periodic table
IE2 = 1,817 kJ/mol
IE3 = 2,745 kJ/mol
IE4 = 11,577 kJ/mol
What is aluminum?
Oxides of active metals combine with acids to form these two products
What are water and a salt (ionic compound)?
Atoms of sulfur and chlorine can combine to form this type of compound
What is a molecular compound?