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For each atom in the table below, write down the subshell from which an electron would have to be removed to make a +1 cation, and the subshell to which an electron would have to be added to make a -1 anion. The first row has been completed for you. Atom H Mg Rb Hg ​ Subshell from which electron removed to form +1 cation 1s 3s 5s 6s ​ Subshell to which electron added to form -1 anion 1s 3s 5s 6s

"What are five properties that differ between ionic and covalent bonds? Formation Strength State at room temperature Solubility Electrical conductivity"

What is the molar mass of nitrogen gas, N2(g)? How many moles of nitrogen molecules are in 56 grams? Explain.

Draw the Lewis structure for CHO2- on a piece of paper. Note: CHO2- has resonance structures, and there are two forms of the drawn ion. Draw both structures.

Select the correct locations on the periodic table. Which two elements have similar characteristics?​ # Periodic Table of the Elements

From which subshell is the electron removed to form a +1 cation?

"Determine the electron geometry (eg) and molecular geometry (mg) of BCl₃. A. eg = trigonal planar, mg = trigonal planar B. eg = tetrahedral, mg = trigonal planar C. eg = tetrahedral, mg = trigonal pyramidal D. eg = trigonal planar, mg = bent E. eg = trigonal bipyramidal, mg = trigonal bipyramidal"

The molar mass of silicon (Si) is 28.09 g/mol. Calculate the number of atoms in a 92.8 mg sample of Si.

Classify the following compounds as ionic or covalent. CH4, CCl4, HCl, NaCl, NH3, CaO, H2​O, Br2, C2​H5​OH, CH3​OCH2​CH3, CO, CH2​CH2, MgSO4, C2​H2, H2​SO4, CH3​COONa, CO2, H2, KBr, O2, NaOH

"There are many Lewis structures you could draw for sulfuric acid, H2SO4 (each H is bonded to an O). Part A: What Lewis structure(s) would you draw to satisfy the octet rule? Draw the molecule(s) by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons."

Write the formula for diphosphorus pentoxide. Express your answer as a chemical formula. Write the formula for diphosphorus pentoxide. Express your answer as a chemical formula. ☐ A chemical reaction does not occur for this question. Submit Request Answer < Return to Assignment Provide Feedback

"Lead Ionic charge (include name given by the old way to name transition metals): A. +2 (Plumbous) B. +3 (Leadous) C. +4 (Plumbic) D. +5 (Argentic)"

What is the formula for the carbonate ion ?

The density of magnesium is 1.74 g/mL. What is the volume of 39.6 g of magnesium? __________ mL

Write the symbolic notation for the atom with 14 protons and 14 neutrons. Express your answer as an isotope.

What are five examples of decomposition reactions?

What is the approximate chlorine-carbon-chlorine bond angle in C2Cl4?

"How many valence electrons are in antimony, Sb? A. 3 B. 5 C. 7 D. 2 E. 6"

"The atomic number for Sulfur is 16, and the atomic mass is 32. Answer the following questions about the sulfur atom: How many protons does it have? How many neutrons does it have? How many electrons does it have? How many electron shells does it have? How many bonds can it make?"

Use the pictures below to answer these questions: How does Magnesium become an ion? What is the charge of the Magnesium ion? # Question 4.1 point The the potures below to answer these questions. How does Magnesium become an es? If you Magnesium does Magnesium has

"Where are the transition metals on the periodic table? A. In the first column B. In columns 3-12 in the center of the table C. In the second column D. In two rows, separated from the rest of the table"

What is the name of the aluminum ion?

An iron atom has an atomic mass of 56. Its atomic number is 26. How many neutrons does the iron atom have?

"A nickel atom has an atomic number of 28 and an atomic mass of 59. What is the structure of this atom? A. It has a central nucleus composed of 28 protons and 31 neutrons, surrounded by an electron cloud containing 28 electrons. B. It has a central nucleus composed of 28 protons and 28 neutrons, surrounded by an electron cloud containing 31 electrons. C. It has a central nucleus composed of 31 protons and 28 neutrons, surrounded by an electron cloud containing 28 electrons. D. It has a central nucleus composed of 28 protons and 59 neutrons, surrounded by an electron cloud containing 28 electrons."

If (S)-glyceraldehyde has a specific rotation of -8.7°, what is the specific rotation of (R)-glyceraldehyde? A) 0.0° B) -8.7° C) +8.7° D) cannot be determined from the information given

What is the empirical formula of a compound that contains 40 percent carbon, 6.7 percent hydrogen, and 53.3 percent oxygen?

"Which of the following are exceptions to the Lewis octet rule? (I) CO2 (II) BeF2 (III) SF4 (IV) SO3 (V) PCl3"

What is the molecular geometry and Lewis structure of IF^−2(1)?

What element has 26 electrons, 29 neutrons, and 26 protons?

An isotope of oxygen has 8 protons, 10 neutrons, and 8 electrons. What is the atomic mass of this isotope?

Which is the correct Lewis structure for fluorine, a group 7A element?

Give the nuclear symbol (isotope symbol) for the isotope of bromine (Br) that contains 46 neutrons per atom.

"Is F2 a polar or nonpolar molecule and why? Electronegativity Values: Element: Fluorine Electronegativity: 4.0 Select one: a. F2 is a polar molecule because it has nonbonding electrons. b. F2 is a nonpolar molecule because the F-F bond is nonpolar. c. F2 is a nonpolar molecule because the F-F bond is polar. d. F2 is a polar molecule because the F-F bond is polar."

What is the molar mass of the ionic compound magnesium fluoride?

"Which formula/name pair is incorrect? A. Mn(NO₃)₂ - manganese(II) nitrate B. Mg(NO₃)₂ - magnesium nitrate C. Mg₃N₂ - magnesium nitrite D. Mn(NO₂)₂ - manganese(II) nitrite E. Mg(MnO₄)₂ - magnesium permanganate"

"Positive ions differ from neutral atoms in that: A) Positive ions have lost protons. B) Positive ions have gained protons. C) Positive ions have lost electrons. D) Positive ions have gained electrons."

What is the 3D structure (Molecular Geometry & Shape) and Geometry Name (e.g., Trigonal Planar) of I^−3 (triiodide ion)?

"For the chemical species HCO^−3, label it as a strong base, weak base, or species with negligible basicity. Write the formula for the conjugate acid, and indicate whether the conjugate acid is a strong acid, weak acid, or a species with negligible acidity. Option 1: Strong Base; H2CO3; Weak Acid Option 2: Weak Base; H2CO3; Strong Acid Option 3: Species with Negligible Basicity; H2CO3; Species with Negligible Acidity Option 4: Strong Base; H2CO3; Strong Acid"

Determine both the formula mass and molar mass of ammonium carbonate, (NH4)2CO3.

"How is LIOH (aq) classified? A. both an Arrhenius and Bronsted-Lowry base B. a Bronsted-Lowry base only C. both an Arrhenius acid and Bronsted-Lowry acid D. neither an acid, nor a base"