What is the element has the electron configuration 1s2 2s2 2p6 3s2 3p2
silicon
100
How many valence electrons are in an atom of magnesium?
What is 2
100
What is another name for the representative elements?
What is Group A elements
100
Who arranged the elements in order of increasing atomic mass to predict the properties of missing elements?
What is Dmitri Mendeleev
100
What element has the highest electronegativity value?
cesium, helium, calcium, fluorine
What is fluorine
200
What is the number of protons and electrons for In
What is 49 p+ and 49e-
200
How many valence electrons are in helium atom?
What is 2
200
What is another name for the transition metals?
What is Group B
200
The modern periodic table is arranged in order of increasing atomic____________?
What is number
200
Each period in the periodic table corresponds to what when you are doing electron configuration?
What is principle energy level
300
The atomic number of an element is the total number of which particles in the nucleus?
What is protons
300
How many valence electrons are in silicon?
What is 4
300
List 3 elements that are metals?
What is Pt, V, Li
300
Which of the following elements has the ionic radius?
Li, K, O, S
What is Li
300
Name 3 elements that are in the same period as phosphorus
What is As, Sb, Bi, N
400
Elements that are characterized by filling of p orbitals are classified as what group(s)?
What is groups 3A through 8A
400
Describe a valence electron.
What is an electron in the highest occupied energy level of an atom.
400
To which category does an element belong if it is a poor conductor of electricity?
What is nonmetal
400
Describe the noble gas electron configuration in regards to orbitals
What is the highest s and p sublevels are completely filled.
400
Write the symbol and electron configuration for oxide.
What is O2-, 1s2 2s2 2p4
500
Describe the difference between inner transition metals and transition metals.
What is inner transition fill up the f orbital and are below the main periodic table, transition metals fill up the d orbital and are in the main periodic table
500
Describe electron dot diagram
What is a depiction of valence electrons around the symbol of an element
500
Which category does the majority of elements belong?
What is metals
500
How does calcium obey the octet rule when reacting to form compounds?
What is It gives up electrons.
500
How does atomic radius change from top to bottom in a group in the periodic table?