Which of these elements has the largest atomic radius: argon, phosphorus, aluminum, sodium or magnesium?
Argon (Ar)
Phosphorus (P)
Aluminum (Al)
Sodium (Na)
In which energy level is the outer electron in rubidium located?
2
37
5
85
Which element listed is likely to be the most reactive?
beryllium
barium
strontium
magnesium
Which of the following elements has the same number of valence electrons as aluminum?
boron
zinc
magnesium
silicon
Given the following information, which element(s) are most likely to lose electrons? I. Iodine is a member of Group VII (halides). II. Strontium is located in the second column of the periodic table. III. Selenium has six valence electrons.
Selenium
Iodine
Selenium and strontium
Strontium
What is an electron shell?
The space around the nucleus where the electrons are found
The exact location of an electron
A hard container holding electrons close to the nucleus
The electron's protective outer layer
Which of the following will react violently with water to form a base?
Calcium (Ca)
Cobalt (Co)
Potassium (K)
Chlorine (Cl)
As you move from left to right on the periodic table, what generally happens to the boiling point of elements?
It increases, then decreases.
It remains constant.
It decreases, then increases.
It decreases.
Which element is a transition group metal and likely to exist in many different forms?
Phosphorous
Barium
Manganese
Rubidium
Electronegativity is the ability of an atom to _____
attract electrons.
attract neutrons.
repel electrons.
repel protons.
What is ionization?
adding neutrons to an atom
removing electrons from an atom
adding protons to an atom
removing protons from an atom
Which of these elements has the smallest atomic radius?
Nitrogen (N)
Phosphorus (P)
Antimony (Sb)
Arsenic (As)
