Chemistry Periodic Trends Retake Test Info (not done yet)

which if the following elements have a tendency to gain electrons? A. chlorine, oxygen, fluorine B. nitrogen, oxygen, aluminum C. chlorine, fluoride, gallium D. nickel, iodine, helium

A. chlorine, oxygen, fluorine

which nonmetal is the most reactive A. fluorine B. chlorine C. bromine D. iodine

A. fluorine

which is responsible for elements being more reactive? A. having high ionization energies B. having low ionization energies C. having low electronegativities D. having a full outer energy level

A. having high ionization energies

which of the following has the largest ionization energy A. Sodium B. Potassium C. Beryllium D. Barium

C. Beryllium

which element would you expect to behave most like sodium? A. barium B. magnesium C. cesium D. hydrogen

C. cesium

which of the following elements is extremely reactive and soft enough to cut with a knife A. Barium B. Hydrogen C. Aluminum D. Cesium

D. Cesium

which of the following has the largest atomic radius A. Oxygen B. Neon C. Boron D. Lithium

D. Lithium

which element is the most reactive A. barium B. hydrogen C. aluminium D. cesium

D. cesium

which correctly lists four atoms from smallest to largest atomic radius? A. iodine, bromine, chlorine, fluorine B. flourine, iodine, bromine, chlorine C. silicon, phosphorus, sulfur, chlorine D. chlorine, sulfur, phosphorus, silicon

D. chlorine, sulfur, phosphorus, silicon

which alkali metal would be most reactive in water and why?

Francium because its one outer electron is farthest from the nucleus compared to the other metals

which family has the lowest electronegativites

alkali metals

when do metalloids act like metals

at high temperatures

metals tend to form

cations

based on the following electron configuration , [Kr] 5s2 4d10 5p5, this element will most likely __________

gain one electron, to form an anion with a 1- charge

name of the family of elements who's electron configuration ends in s2p5

halogens

a cation is formed when an atom ______ electrons

loses

Compared to the atomic radius of a sodium atom, the atomic radius of a potassium atom is larger. The larger radius is primarily a result of the potassium atom having ________

more energy levels

which group on the periodic table are the least reactive

noble gases

the elements calcium and strontium have similar chemical properties because they both have the same ________

number of outer electrons

valence electrons are electrons in the

s and p orbitals

which best explains why cations are smaller than the atoms from which they are formed?

the metallic atoms loses electrons, resulting in loss of an entire energy level

an ion with a charge of +2 has _______

two more protons than electrons