Question

why does water have a bent, v - shaped molecular structure? 2 points hydrogen bond strength gravitational forces electron repulsion between negatively charged electrons random molecular arrangement what makes water a polar molecule? 2 points complete electron sharing between hydrogen and oxygen uneven electron distribution creating partial charges complete electron transfer equal electron distribution how does waters polarity contribute to its ability to dissolve substances? * 2 points by generating heat during dissolution by completely breaking molecular bonds by creating mechanical pressure by attracting both positive and negative ions

Explanation:

• For the first question: According to VSEPR (Valence - Shell Electron - Pair Repulsion) theory, in a water ($H_2O$) molecule, the oxygen atom has two bonding pairs (with hydrogen atoms) and two lone pairs of electrons. The electron - electron repulsion (lone pair - lone pair, lone pair - bonding pair) causes the molecule to adopt a bent shape.
• For the second question: In a water molecule, oxygen is more electronegative than hydrogen. So, the electrons in the $O - H$ bonds are not shared equally. This uneven electron distribution leads to a partial negative charge on the oxygen atom and partial positive charges on the hydrogen atoms, making water a polar molecule.
• For the third question: The polarity of water means it has partial charges. It can attract both positive and negative ions (from ionic compounds) or interact with polar molecules (through dipole - dipole interactions). This allows water to dissolve many substances.

Answer:

• First question: Electron repulsion between negatively charged electrons
• Second question: Uneven electron distribution creating partial charges
• Third question: By attracting both positive and negative ions