The atomic number of an element is IA Number of electrons in a neutral atom Number of protons in the nucleus Numerical posifion of the element in the 39. 1,0 3. Periodic Table expermental ently used to Cr,0ag) and The melting points of magnesium oxide (MgO) and barium oxide (BaO) are 3173 K and 2196 K respectively. This is because: 1. 40. on is The barium ion is a smaller ion than the magnesium ion The molar masses of the oxides are different Magnesium ion has a high charge density leading to some covalent character rium reactions 41. The equilibrium below is ohtained when methylamine dissolves in water CH,NH, +H,0 -CH, NH + OH- Base 1 Acid 2 Acid 1 Base 2 CHNH, is Lewis base 2 OH is a conjugate base of H;O 3 CH,NH,/CH NH is an aciul/base conjugate B the electronic pair The clements n the series Se to /n Are called d-block elements Are all metals of high melting points Have an incompletely filled 3d suh-shett with the exception of Cu and Zn live valence 42. ng electron 1. 2. 3. The ionization energy of a hy drogen atom is Energy jump in the Balmer series Obtained from the line emission spectrum of 43. hydrogen gas 3. Obtained at the beginning of the ntu (E-In-) lor md fate 44. Which of the following statemicus apply to the ethene (CHa) molecule The H-C-H bond angleş are tetrahedral u thu
The atomic number of an element is IA Number of electrons in a neutral atom Number of protons in the nucleus Numerical posifion of the element in the 39. 1,0 3. Periodic Table expermental ently used to Cr,0ag) and The melting points of magnesium oxide (MgO) and barium oxide (BaO) are 3173 K and 2196 K respectively. This is because: 1. 40. on is The barium ion is a smaller ion than the magnesium ion The molar masses of the oxides are different Magnesium ion has a high charge density leading to some covalent character rium reactions 41. The equilibrium below is ohtained when methylamine dissolves in water CH,NH, +H,0 -CH, NH + OH- Base 1 Acid 2 Acid 1 Base 2 CHNH, is Lewis base 2 OH is a conjugate base of H;O 3 CH,NH,/CH NH is an aciul/base conjugate B the electronic pair The clements n the series Se to /n Are called d-block elements Are all metals of high melting points Have an incompletely filled 3d suh-shett with the exception of Cu and Zn live valence 42. ng electron 1. 2. 3. The ionization energy of a hy drogen atom is Energy jump in the Balmer series Obtained from the line emission spectrum of 43. hydrogen gas 3. Obtained at the beginning of the ntu (E-In-) lor md fate 44. Which of the following statemicus apply to the ethene (CHa) molecule The H-C-H bond angleş are tetrahedral u thu
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Answer Q39, 40, 41
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