CHEMICAL BONDING (QUIZ-1) 1 / 5 An ionic bond is formed when electrons are? Shared. Divided. Lost. Transferred. An ionic bond is formed when electrons are transferred. In an ionic bond, one atom donates electrons to another atom, resulting in the formation of positively and negatively charged ions. This transfer of electrons creates a strong electrostatic attraction between the ions, leading to the formation of the bond. Sharing, dividing, or losing electrons are not characteristics of an ionic bond. 2 / 5 What is the charge of the ions formed by alkali metals? -1 +1 -2 +2 Alkali metals are located in Group 1 of the periodic table, which means they have one valence electron. These metals have a tendency to lose this valence electron in order to achieve a stable electron configuration, resulting in the formation of a positively charged ion. Therefore, the charge of the ions formed by alkali metals is +1. 3 / 5 Which of the following describes the property of covalent compounds? They have low melting point. They are usually soluble in water. They can conduct electricity in liquid form. They have high boiling point. Covalent compounds are formed by the sharing of electrons between atoms. This type of bonding results in a relatively weak force of attraction between the molecules, leading to a low melting point. In covalent compounds, the molecules are held together by intermolecular forces, which are weaker than the ionic or metallic bonds found in other types of compounds. Therefore, covalent compounds generally have lower boiling and melting points compared to ionic or metallic compounds. 4 / 5 Element X has electronic configuration 2.8.1. Element Y has electronic configuration 2.6. What is the formula of the compound formed between element X and Y? XY X2Y XY2 XY3 The electronic configuration of element X is 2.8.1, which means it has 2 electrons in the first shell, 8 electrons in the second shell, and 1 electron in the third shell. On the other hand, element Y has an electronic configuration of 2.6, indicating that it has 2 electrons in the first shell and 6 electrons in the second shell. In order to achieve stability, element Y needs to gain 2 electrons to complete its second shell. Therefore, the compound formed between element X and Y would be X2Y, where element Y gains 2 electrons from element X to complete its second shell. 5 / 5 Which of the following elements would form ionic compounds? Carbon and hydrogen Calcium and oxygen Oxygen and neon Sodium and magnesium Calcium and oxygen would form ionic compounds because calcium has a tendency to lose two electrons and become a positively charged ion (Ca2+), while oxygen has a tendency to gain two electrons and become a negatively charged ion (O2-). The attraction between these oppositely charged ions would result in the formation of an ionic compound, specifically calcium oxide (CaO). Your score isThe average score is 0% 0% Restart quiz