10N Periodic Table Quiz

Potassium and krypton are elements in Period 4.

Potassium is at the beginning of the period and krypton is at the end of the period.

Which statement is correct?

• Potassium is less metallic than krypton.

• Potassium is more mettalic than krypton.

• Potassium and krypton have similar metallic properties.

• Potassium and krypton have similar non-metallic properties.

The set representing the correct increasing order basic character is:

• K₂O < Na₂O < Al₂O₃ < MgO

• MgO < Al₂O₃ < K₂O < Na₂O

• Al₂O₃ < MgO < Na₂O < K₂O

What are the charges of halide ions?

• -2

• +3

• +1

• -1

Which of the following is NOT a noble gas?

• helium

• neon

• argon

• sodium

How are the elements arranged in the periodic table?

• Increasing atomic mass

• Increasing atomic number

• Increasing neutron number

• Increasing charges

Which statement explains the trend in reactivity of group 1 elements?

• The number of shell increases, decreasing the forces of attraction - easier to lose the electron,

  and the reactivity increases

• The number of shell increases, decreasing the forces of attraction - harder to gain the electron,

  and the reactivity decreases

• The number of shell increases, decreasing the forces of attraction - harder to lose the electron,

  and the reactivity increases

Will there be any reaction when Chlorine is added to Potassium iodide solution?

• No because chlorine is less reactive than iodide ion in potassium iodide solution. So, displacement reaction does not occur.

• No because iodide ion in potassium iodide solution is less reactive than chlorine. So, displacement reaction does not occur.

• Yes because chlorine is more reactive than iodide ion in potassium iodide solution. So, displacement reaction occurs.

• Yes because iodide ion in potassium iodide solution is more reactive than chlorine. So, displacement reaction occurs.

Why are noble gases unreactive?

• Because they have no charges.

• Because they have eight valence electrons.

• Because they are inert gases.

• Because they have full electronic configuration.

Potassium has a lower relative atomic mass than argon but on the Periodic table potassium appears after argon. Why is potassium placed after argon?

• Argon has less neutrons than potassium.

• Argon has more protons than potassium.

• Potassium has more protons than argon.

• Potassium has more neutrons than argon.

What are the products when alkali metals react with water?

• Alkali

• Salt

• Hydrogen gas

• Oxygen gas

• Carbon dioxide gas