Ions quiz #11 Flashcards
Ions quiz #11
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A hydrogen ion, formed during the dissociation of water, has a charge of which of the following? +1. An atom or a molecule with either a positive or negative charge is called a(n)? It is called an ion. A positively charged ion that makes a solution acidic is called? Hydronium ion (H3O+). Determine the number of protons and electrons in N3-. N3- has 7 protons and 10 electrons. A positively charged ion has one or more __. It has one or more fewer electrons than protons. The oxygen has a ______ charge and the hydrogens a ________ charge in water. Oxygen has a partial negative charge; hydrogens have partial positive charges. A positive ion forms when an atom ______. Loses electrons. In order to have a positive charge, an atom must have ________. More protons than electrons. A cation has a net charge, while an anion has a net charge. A cation has a positive net charge; an anion has a negative net charge. What is the charge on the silver ion in AgMnO4? The charge on silver is +1. After the transfer of the electron, sodium will form an ion with __________. A +1 charge. A cation of +2 indicates that an element has? Lost two electrons. When a Mg2+ ion becomes a Mg atom, the radius increases because the Mg2+ ion? Mg2+ has fewer electrons, so gaining electrons increases its radius. An ion that consists of 7 protons, 6 neutrons, and 11 electrons has a net charge of ________. -4. What is the charge of the metal in [Fe(NH3)2Br4]2–? Omit the + sign. 2. If N gains two electrons, which of the following elements would it be isoelectronic with? Fluorine (F-). Will Ca gain electrons to form an ion? No, Ca loses electrons to form Ca2+. What is the atomic number of the cation formed in the reaction in the illustration? The atomic number is the same as the neutral atom; it does not change. If an unknown monatomic ion with a 3- charge has 10 electrons, what is the formula for that ion? N3-. Ions are described as ________ if they have the same number of electrons. Isoelectronic. A cation is an element that _____ one or more electrons to form _____ ions. Loses; positive. An atom or a molecule with either a positive or negative charge is referred to as a(n) . Ion. An anion has a(n) _____ charge. Negative. Sulfur readily forms the following monatomic ion: S2-. An atom of magnesium has lost two electrons. It is known as a(n) ________. Mg2+ ion (cation). Sodium is much more apt to exist as a cation than is chlorine. This is because ________. Sodium more easily loses an electron to form Na+. When an atom that has no charge loses two electrons, it becomes a? A cation with a +2 charge. A magnesium ion is _____ than a sodium ion. Smaller, due to higher charge and similar electron configuration. An anion always? Has more electrons than protons. A sodium cation is _____ than a sodium atom. Smaller. Atoms with the same number of protons but with different electrical charges _____. Are different ions of the same element. When electrons are removed from the outermost shell of a calcium atom, the atom becomes? A Ca2+ cation. To become positively charged, an atom must: Lose electrons. What is the charge of nitrate? Nitrate (NO3-) has a -1 charge. When electrons are lost, a _____ ion is formed. When electrons are gained, a _____ ion is formed. Cation; anion. Nonmetallic elements form ions by _____ valence electrons to complete their outer shell. Gaining. When electrons are lost, a _____ ion is formed. Cation. When an atom loses an electron it becomes a? Cation. What is the charge of aluminum? Aluminum forms Al3+ with a +3 charge. An atom or group of bonded atoms that has a positive or negative charge is called a/an? Ion.
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