Periodic Table Quiz

How are elements classified in Mendeleev's periodic table?

• According to their atomic numbers

• According to their atomic weights

• According to their electronegativity

• According to their chemical properties

What did Rutherford discover about the nucleus of the atom?

• It contains negatively charged electrons

• It contains positively charged protons

• It contains both protons and neutrons

• It contains neutral neutrons

How are elements classified in the modern periodic table?

• According to their atomic weights

• According to their atomic numbers

• According to their chemical properties

• According to their electronegativity

What determines the period number of an element in the modern periodic table?

• Number of electrons in the outermost energy level

• Number of neutrons in the nucleus

• Number of protons in the nucleus

• Number of energy levels occupied by electrons

What is the ability of the atom in a covalent molecule to attract the electrons of the chemical bond towards itself called?

• Atomic size

• Electronegativity

• Chemical activity

• Metallic properties

Which elements have less than four electrons in their outermost energy levels?

• Noble gases

• Metalloids

• Nonmetals

• Metals

What are basic oxides?

• Oxides that do not react with water

• Oxides that dissolve in water forming acidic solutions

• Nonmetallic oxides

• Oxides that dissolve in water forming alkaline solutions

What is the arrangement of metals in a descending order according to the degree of their chemical activity called?

• Chemical activity series

• Metallic properties series

• Electronegativity series

• Atomic size series

What are nonmetallic oxides that dissolve in water forming acidic solutions called?

• Acidic oxides

• Metallic oxides

• Polar compounds

• Basic oxides

What are the elements that have the properties of both metals and nonmetals called?

• Metals

• Nonmetals

• Metalloids

• Noble gases