Periodic Trends BEG-PROG

The atom with the largest atomic radius in Group 18 is - 

• Ar
• He
• Kr
• Rn

As you move down a group, atomic radius increases because - 

• you add more and more neutrons
• you add more and more protons
• you add more and more shells (energy levels)
• you add more atomic mass

Which of the following will have a lower ionization energy than Scandium (Sc)?

• Selenium (Se)

• Titanium (Ti)

• Calcium (Ca)

• Magnesium (Mg)

Which of the following halogens has the greatest electronegativity?

• Chlorine (Cl)

• Bromine (Br)

• Iodine (I)

• Astatine (At)

Which group of elements has the lowest ionization energies?

• Alkali Metals (Group 1)

• Alkaline Earth Metals (Group 2)

• Halogens (Group 17)

• Noble Gases (Group 18)

What is the amount of energy required to remove an electron from an atom?

• atomic radius

• ionization energy

• coulombic attraction

• electronegativity

What is a measure of the tendency of an atom to attract a bonding pair of electrons when the atom is in a compound?

• ionization energy

• electropositivity

• electronegativity

• coulombic attraction

What is a negatively-charged ion which forms when an atom gains electrons?

• cation

• anion

• electron

• ion

What is a positively-charged ion which forms when an atom loses electrons?

• atom

• ion

• cation

• anion

As you move across the periodic table atoms tend to get smaller because, ______________.

• the atoms have more mass.
• the atoms have less mass
• the atoms have more protons.
• the atoms have less electrons.