Question

ion - oven atom with an overall charge due to unequal numbers of protons (+) and electrons (-). anion - ion with an overall negative (-) charge. cation - ion with an overall positive (+) charge. use the following atoms/ions: name of atom/ion, atomic number, number of protons, number of neutrons, mass number, number of electrons, overall charge. (table with numbers: 20,21,22, 23,24,25, 26,27,28, 29,30,31, 32, 33,34,35, 36,37,38,39, 40,41,42,43, 44,45,46, 47,48,49,50; circled numbers 11–19). 44. overall charge? type a response. 45. element symbol and charge? type a response. 46. ion? type a response. 47. number of protons? type a response. 48. number of electrons? type a response.

Explanation:

44. Overall Charge?

Step1: Recall charge formula

Overall charge = (Number of protons) - (Number of electrons). But since the table likely has proton (p⁺) and electron (e⁻) counts, sum protons' +1 and electrons' -1. Assuming a typical ion, e.g., if protons = 20, electrons = 18 (like Ca²⁺), charge = 20 - 18 = +2. But from the table (row 2, column 3: 20 p⁺, column 2: -18 e⁻? Wait, maybe the table has p⁺, e⁻, so charge = p⁺ - e⁻. Let's take row 2, column 3: 20 (p⁺), column 2: -18 (e⁻? No, maybe e⁻ count. Wait, the left table: "p⁺", "e⁻", "n⁰", "ion". So for a cell, p⁺, e⁻, n⁰, ion. Let's take problem 44: row 8, column 3: 44 (p⁺?), column 2: +20, column 4: 45? Wait, maybe the table is: row 8: x20, +20, 44, 45, 46? No, better to use ion charge: protons - electrons. For a common ion, say if protons = 20 (Ca), electrons = 18 (Ca²⁺), charge +2. But maybe the specific cell: let's assume the ion in row 2, column 5: 22? No, problem 44 is "overall charge" for a specific ion. Wait, maybe the table has "p⁺", "e⁻", so charge = p⁺ - e⁻. Let's take row 2, column 3: 20 (p⁺), column 2: -18 (e⁻? No, e⁻ count is 18? Then 20 - 18 = +2. So overall charge is +2 (example, but need to check the table. Alternatively, if it's a cation, positive; anion, negative. But since the problem is about ions, let's assume a typical case. Wait, maybe the table's row 2, column 3: 20 p⁺, column 2: -18 e⁻ (so e⁻ = 18), charge = 20 - 18 = +2.

Step2: Calculate

Charge = protons - electrons. If protons = 20, electrons = 18, then 20 - 18 = +2.

Step1: Identify element from protons

Protons = atomic number. If protons = 20, element is Ca (calcium). Charge = protons - electrons. If electrons = 18, charge = +2. So symbol Ca, charge +2 (Ca²⁺).

Step2: Combine symbol and charge

Element symbol: Ca, charge: +2 (Ca²⁺).

Step1: Define ion

Ion is an atom with unequal protons and electrons, so charged. For example, Ca²⁺ (calcium ion), Na⁺ (sodium ion), Cl⁻ (chloride ion). From previous, Ca²⁺ is an ion.

Step2: Name the ion

Based on element and charge, e.g., calcium ion (Ca²⁺) or sodium ion (Na⁺). Assuming protons=20, calcium ion (Ca²⁺).

Answer:

+2 (or specific to the table, but assuming a common ion, +2)

45. Element Symbol and Charge?