atomic number
The observed regularities in the properties of the elements are periodic functions of their
atomic mass
Elements in Mendeleev’s periodic table were arranged according to their
metals only
Most of the groups in the periodic table of the elements contain
a metalloid or a nonmetal
AN element is a gas at room temperature. It could me
lose electrons and form positive ions
Atoms of metals tend to
High height conductivity
Which property is generally a characteristic of metallic elements
C, Si, Ge
Which list of elements contains two metalloids
K, Mn, As, Ar
Which set of elemetnts contains a metalloid
Period 4, Group 15
On the periodic table, an element classified as a metalloid can be found in
What is a metalloid
which was is a period
which way is a group
What do groups have in common
What do Periods have in common
Br
Which element in Period 4 is classified as an active nonmetal
brittle
A property of most nonmetals in the solid state is that they are
low thermal conductivity and low electrical conductivity
Which properties are characteristics of nonmetals
100. kJ
Which value represents the first ionization energy of a nonmetal
decrease
As the elements of Group 1 are considered in order from top to bottom, the first ionization energy of each successive element will
smaller radius and lower reactivity
Compared to an atom of potassium, an atom of calcium has
all element s have valence electrons in the same principal energy level
which statement describes the elements in Period 3
decreased
as atoms of elements in group 16 are considered in order from top to bottom, the electronegativity of each successive elements
2.6
A nonmetal could have an elecronegativity of
high ionization energy and high elecronegativity
Which properties are most common in nonmetals
Nonmetal with a high electronegativity
A diatomic element with a high first ionization energy would most likely be a
S
Which element at room temperature is a poor conductor of electricity and has a relatively high electronegativity?
decreases
Which in Period 2 of the Periodic Table, as the atomic number increases the atomic radius generally
C
Atoms of which element have the smallest radius
The radius of the potassium atom is larger
Which statement best compares the atomic radius of a potassium atom and the atomic radius of a calcium atom?
How do you find the atomic number
1&2
what groups have the most metallic properties
The trend going up and down a group
Trend going left and right a period
Similar chemical properties
Elements in a group not only have the same valence electrons but also…
their outermost principal energy level only holds 2
Hilium vs Hydrogen
Which are Noble gases
What are transition metals
color
When transition elements form ions they produce…
