d and f BLOCK ELEMENTS

Which statement about the p-block of the periodic table is correct?

• It has 5 columns, because a maximum of 5 electrons can occupy all the orbitals in a p-shell.
• It has 6 columns, corresponding to the maximum number of electrons in the p-subshell.
• It has 10 columns, because a maximum of 10 electrons can occupy all the orbitals in a p-shell.
• It has 3 columns, because there are 3 p-orbitals.

In the modern periodic table, what does the period number directly indicate?

• The atomic number
• The atomic mass
• The principal quantum number (n) of the outermost shell
• The azimuthal quantum number (l) of the outermost shell

Predict the formula of the compound formed between Element 71 (Lutetium, Lu) and Fluorine (F).

• LuF
• LuF2
• LuF3
• Lu2F3

Predict the formula of the compound formed between Phosphorus (P) and Fluorine (F).

• PF
• PF3
• PF5
• P2F5

Predict the formula of the compound formed between Silicon (Si) and Oxygen (O).

• SiO
• SiO2
• Si2O
• Si2O4