What is this element? 
1s²2s²2p⁶3s²3p⁶
4s²3d¹⁰4p⁶

• Argon
• Krypton
• Selenium
• Bromide

What is the example of species that are isolectronic?

• Na⁺ and Si⁴⁺

• Na⁺ and Cl^-

• Mg²⁺ and Al ⁺

• S^2- and O^2-

What bond is formed between 2 or more nonmetals sharing electrons?

• Covalent bond

• Ionic bond

• Metallic bond

What bond is formed when a metal transfers electrons to a nonmetal?

• Covalent bond

• Ionic bond

• Metallic bond

As bond length increase the strength...

• increases

• decreases

• no change

Which of the following pairs of elements would be expected to have the most similar properties?

• Barium and Calcium

• Sodium and Magnesium

• Nickel and Copper

• Lithium and Helium

Which atom has the largest atomic radius?

• potassium
• rubidium 
• francium
• cesium

Which has a lower first ionization energy than Scandium (Sc)(atomic number 21)?

• Helium (He)

• Titanium (Ti)

• Calcium (Ca)

• Magnesium (Mg)

Which element has the lowest electronegativity?

• Sr

• Mg

• Ra

• Ca

Choose the ionic compound with the greater magnitude of lattice energy.

• NaCl

• CsI