Chemical bonding FiniteQuest

Chemical bonding – Electrovalent bonding

Electron dot structure of electrovalent compounds

1 / 10

Which of the following pairs of elements is most likely to form an electrovalent bond based on their electron configurations?

Carbon (1s² 2s² 2p²) and Oxygen (1s² 2s² 2p⁴)

Silicon (1s² 2s² 2p⁶ 3s² 3p²) and Oxygen (1s² 2s² 2p⁴)

Nitrogen (1s² 2s² 2p³) and Hydrogen (1s¹)

Sodium (1s² 2s² 2p⁶ 3s¹) and Chlorine (1s² 2s² 2p⁶ 3s² 3p⁵)

2 / 10

In the formation of magnesium oxide (MgO), how many electrons are transferred from the magnesium atom to the oxygen atom, and what is the resulting charge on each ion?

1 electron transferred; Mg2+, O2-

2 electrons transferred; Mg2+, O2-

1 electron transferred; Mg+, O-

2 electrons transferred; Mg2-, O2+

3 / 10

Consider the electron dot structure for sodium chloride (NaCl). Which of the following correctly represents the structure?

Na: + :Cl:

[Na]+ [Cl]- (with Cl having 8 electrons around it)

Na: + [Cl]:

[Na]+ [Cl]+

4 / 10

Which of the following statements about electrovalent (ionic) bonding is correct?

It involves the sharing of electrons between atoms.

It occurs between two atoms with similar electronegativities.

It involves the complete transfer of one or more electrons from a metal to a non-metal.

It results in the formation of neutral molecules.

5 / 10

What is the orbital configuration of chlorine after it gains an electron to form Cl⁻ in MgCl₂?

1s² 2s² 2p⁶ 3s² 3p⁵

1s² 2s² 2p⁶ 3s² 3p⁶

1s² 2s² 2p⁶ 3s² 3p³

1s² 2s² 2p⁶ 3s² 3p⁷

6 / 10

How many electrons does chlorine (Cl) gain when it forms an ion in an ionic bond with magnesium (Mg) in MgCl₂?

1 electron

2 electrons

3 electrons

0 electrons

7 / 10

What is the correct Lewis (electron dot) structure for sodium chloride (NaCl)?

Na : Cl

Na⁺ [Cl]⁻

Na : [Cl]

Na [Cl]⁻

8 / 10

What is the electron configuration of magnesium (Mg) after it forms an ion in magnesium chloride (MgCl₂)?

1s² 2s² 2p⁶ 3s¹

1s² 2s² 2p⁶

1s² 2s² 2p⁶ 3s²

1s² 2s² 2p⁶ 3p⁶

9 / 10

Which of the following compounds exhibits electrovalent (ionic) bonding?

H₂O

CH₄

NaCl

CO₂

10 / 10

Electrovalent bonding (ionic bonding) occurs when:

Electrons are shared equally between two atoms.

Electrons are transferred from one atom to another, resulting in oppositely charged ions.

Electrons are shared unequally between two atoms.

Neutrons are transferred between two atoms.

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