Periodic trends

When chlorine gains one electron, the resulting ion is: A) Cl⁻ with larger radius than Cl atom B) Cl⁻ with smaller radius than Cl atom C) Cl⁺ with larger radius D) Cl⁺ with smaller radius

Which of the following elements is in the d-block? A) Calcium (Ca) B) Iron (Fe) C) Oxygen (O) D) Sodium (Na)

Which atom has the smallest atomic radius? A) Li B)C C) F D) O

The elements of the s-block include: A) Groups 1 and 2 B) Groups 13 to 18 C) Transition metals D) Noble gases

Elements in which the last electron enters a p orbital belong to the: A) s-block B) p-block C) d-block D) f-block

Which element has the largest atomic radius in Period 2? A) Lithium (Li) B) Boron (B) C) Oxygen (O) D) Fluorine (F)

When an atom loses electrons, it becomes:

Which of the following has the largest ionic radius? A) Na⁺ B) Mg²⁺ C) Al³⁺ D) Ne

Which element is most likely to form a 3⁺ ion? A) Aluminum (Al) B) Oxygen (O) C) Sodium (Na) D) Sulfur (S)

What is the correct charge of the ion formed by sulfur?

When magnesium forms an ion, it: A) Gains two electrons to form Mg²⁻ B) Loses two electrons to form Mg²⁺ C) Gains one electron to form Mg⁻ D) Shares two electrons to form a molecule