The group of the periodic table containing Lithium, Sodium, Potassium, and Rubidium is called?
What is alkali metals
100
Mendeleev noticed that properties of elements usually repeated at regular intervals when the elements were arranged in order of increasing.....
What is atomic mass
100
The energy required to remove an electron from an atom is the atom's......
What is ionization energy
100
The element with the greatest electronegativity is Oxygen, Sodium, Chlorine, or Flourine?
What is fluorine
100
A horizontal row of blocks in the periodic table is called....
What is a period
200
The group in the periodic table that includes magnesium, calcium, and barium is called?
What is alkaline earth metals
200
The person whose work led to a periodic table based on increasing atomic number was......
Who was Moseley
200
A measure of the ability of an atom in a chemical compound to attract electrons from another atom I the compound is called......
What is electronegativity
200
In a row in the periodic table, as the atomic number increases, the atomic radius......
What is decreases
200
Elements to the right side of the periodic table have properties most associated with......
What is nonmetals
300
Argon, Kryton, and xenon are......
What is noble gases
300
Moseley's work led to the realization that elements with similar properties occurred at regular intervals when the elements were arranged in order of increasing......
What is atomic number
300
When an electron is acquired by a neutral atom, the energy change is called.....
What is electron affinity
300
As you move down Group 14 in the periodic table from carbon through lead, atomic radii......
What is increase
300
Elements in which the d-sublevel is being filled have the properties of.....
What is metals
400
Elements in a group or column in the periodic table can be expected to have similar......
a)atomic masses
b)atomic numbers
c)numbers of neutrons
d)properties
What is properties
400
Mendeleev predicted that the spaces in his periodic table represented.....
What is undiscovered elements
400
When an electron is added to a neutral atom, a certain amount of energy is.....(absorbed, released, or either)
What is absorbed or released
400
Across a period, ionization energies of d-block elements generally......
What is increase
400
To which block do the actinide elements belong....
a)s
b)d
c)p
d)f
What is f block
500
The principle that states that the physical and chemical properties of the elements are periodic functions of their atomic numbers is....
a)the periodic table
b)the periodic law
c)the law of properties
d)Mendeleev's law
What is the periodic law
500
Mendeleev left spaces in his periodic table and predicted the existence of three elements and their.....
a)atomic numbers
b)colors
c)properties
d)radioactivity
What is properties
500
One-half the distance between the nuclei of identical atoms that are bonded together is called the.....
What is atomic radius
500
Compared to the alkali metals, the alkaline earth metals are.....
a)are less reactive
b)have lower melting points
c)are less dense
d)combine more readily with nonmetals
What is a) less reactive
500
The most reactive group of the nonmetals is the......