Anatomy Test
What is the oxidation number for elements in Group 2?
+2
What is the oxidation number of elements in the Halogen family?
-1
What is the oxidation number for Oxygen?
-2
What is the oxidation number of elements in Group 18?
0
How many electrons should Lithium have around its Lewis dot model?
1
Hydrogen needs _____ electrons in its valence shell to be stable.
2
According to the octet rule most elements need _______ valence electrons.
8
The element with the lowest electronegativity in Period 3 is (Pay attention to what this is asking you)-
Ar
List the following in order of weakest to strongest ionization energy.P, Cs, Co, Sr
Cs, Sr, Co, P
List the following from largest to smallest atomic radius.P, Cs, Co, Sr
Cs,Sr, Co, P
The element with the largest electronegativity in the halogen family (group 7) is -
F
Which has the greater EN:H or F?
F
Chlorine and Fluorine are both very electronegative, as they are both missing a single electron from their valence energy level. Why is Fluorine more electronegative than Chlorine?
Fluorine has less energy levels
Which element is the most reactive?
Lithium
Which has the greater EN:N or C?
N
Which element has the greater ionization energy? out of Mg and P
Phosphorus
Why does ionization energy decrease going down a group?
adding more energy levels makes the valence e- further from the nucleus
Which of the following elements has the lowest ionization energy out of Be, Ca, Mg, Ba ? HINT: larger the atom, lower the energy
ba
Which element has the greater ionization energy? out of Iodine and Chlorine
chlorine
As you look down a group, ionization energy and electronegativity
decrease
In an electron dot diagram, two pairs of shared electrons represents a ...
double bond
The tendency of an atom to attract electrons and acquire a negative charge
electrongravitity
What are oxidation numbers
electrons gained or lost in chemical bonding
What is ionization energy?
energy required to remove an electron
Fluorine, chlorine, bromine, and iodine all have the same number of valence electrons and have a tendency to gain electrons. Which element has the greatest ionization energy and electronegativity?
fluorine
Vertical columns of elements (families) on the periodic table with similar properties
groups
What are the vertical columns on the periodic table called?
groups
Electronegativity is...
how good a atom is at attracting electrons
Ionization energy is...
how much energy it takes to remove an electron from an atom
As you look from left to right across a period, ionization energy and electronegativity both
increase
Elements which are shiny, conduct electricity and heat are called
metal
In an electron dot diagram, two pairs of shared electrons represents a ...
metalloids
Which element is most likely to form a covalent bond?
nitrogen
What elements have zero electronegativity?
noble gases
Is hydrogen considered a metal or a non-metal?
nonmetal
How do covalent bonds form?
sharing valence electrons between atoms
As you move down the periodic table atoms get bigger. This is because ____________.
the atoms have more energy levels
What is a valence electron?
the number of electrons in the last shellI
What do the horizontal rows on the periodic table tell us?
the number of orbitals
Elements closer to the noble gases have stronger attraction for electrons.
true
Which property of an atom or element will determine how it reacts with other elements or atoms?
valence electrons
