Yes, dirt can carry a negative charge. This is because dirt particles can accumulate electrons from their surroundings, giving them a negative charge. This negative charge can attract and hold onto positively charged particles, such as nutrients in soil, making it an important factor in soil fertility and plant growth. **

Oxygen is negatively charged because it has a higher electronegativity than hydrogen. This means that oxygen has a stronger attraction for electrons, causing it to pull the shared electrons in a covalent bond closer to itself, giving it a partial negative charge. **

AlCl4 is negatively charged because it has gained an extra electron to achieve a full outer electron shell, making it more stable. This extra electron gives the molecule a net negative charge, as it now has more electrons than protons. The negative charge is distributed over the entire molecule, resulting in an overall negative charge for AlCl4. **

FeBr4 is negatively charged because it is an anion, meaning it has gained one or more electrons to achieve a stable electron configuration. In the case of FeBr4, the iron atom has donated four electrons to the bromine atoms, resulting in a net negative charge on the molecule. This negative charge helps to balance out the positive charge of the iron atom, creating an overall neutral molecule. **

HO is negatively charged because it has an extra electron compared to the neutral state of the molecule. The oxygen atom in HO has a higher electronegativity than hydrogen, so it attracts the shared electrons in the O-H bond more strongly, resulting in a partial negative charge on the oxygen atom and a partial positive charge on the hydrogen atom. This unequal sharing of electrons creates a polar covalent bond, and the overall molecule has a net negative charge due to the presence of the extra electron. **

Halide ions are negatively charged because they have gained an extra electron to achieve a stable electron configuration. Halide ions are formed when halogen atoms, which have seven valence electrons, gain one electron to complete their outer electron shell and attain a full octet. This extra electron gives the halide ion a negative charge, making it an anion. **

Carbonate (CO3^2-) is doubly negatively charged because it consists of one carbon atom and three oxygen atoms. Each oxygen atom contributes two electrons to form a total of six electrons, while the carbon atom contributes four electrons. This results in a total of ten electrons, giving carbonate a charge of -2 to achieve stability through a full outer electron shell. **

The electroscope can be positively or negatively charged, depending on the situation. When a positively charged object is brought near the electroscope, the electrons in the electroscope are repelled and move away, leaving a net positive charge, causing the leaves to repel each other. Conversely, when a negatively charged object is brought near the electroscope, the electrons in the electroscope are attracted and move closer together, leaving a net negative charge, causing the leaves to also repel each other. Therefore, the electroscope can exhibit either positive or negative charge depending on the circumstances. **