Which of the following situations best describes an ionic bond? (Points : 1)?

1 Which of the following situations best describes an ionic bond?

(Points : 1)

Two atoms each give up an electron, and an electrostatic force attracts them.

One atom gains an electron while the other atom loses an electron, and an electrostatic force repels them.

Two atoms gain electrons and an electrostatic force attracts them.

One atom gains an electron while the other atom loses an electron, and an electrostatic force attracts them.

Question 2.2. Which of the following pairs of elements would most likely form a salt?

(Points : 1)

Na and Ca

Ca and Br

Cl and Fl

H and He

Question 3.3. A salt forms in the reaction of barium with chlorine. What is the most likely formula unit of this salt?

(Points : 1)

BaCl

BaCl2

Ba2Cl

BaCl3

Question 4.4. Which of the following would have an electrostatic force of attraction between them?

(Points : 1)

Na+ and K+

Br and O2

K+ and O2

Na+ and Ne

Question 5.5. Sodium fluoride is a common ingredient in toothpaste. What is the most likely formula unit of this salt?

(Points : 1)

NaF

NaF2

Na2F

NaF3

2 Answers

  • Mr. Right is correct except for 2.

    Na and Ca are both positively charged and will not form a salt, the answer should be b.

    For 4, I would guess K+ and O2, although O2 doesn’t have a charge, it would form a negative charge when separated or in a molecule

  • 1) d

    2) a

    3) b

    4) Not sure

    5) a

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