
Question 3 (1 point) A neutral atom of calcium (Ca) will have 4 orbital rings surrounding its nucleus. True False Q...
7. How many valence electrons does Br atom have? (1)2 (2) 4 (3) 7 (4) 8 18. How many electrons must a Sc atom lose to form a stable cation? (1) 5 (2)3 (3)7 (4) 8 19. Which element has the following ground-state electron configuration (Kry5s4d105p? (3) 1 (4) Te (1) Sn (2) Sb 20. Which one of the following elements forms a stable 2- anion? (1) P (2) Se (3) AI (4) Mg 21. Which two of the following...
Question 6 0.2 pts Which of the following elements have properties that do not fit well in their group (column) or row? (Check all that apply) calcium Okrypton hydrogen chlorine G periodic table with x 34 Atomic M eqizzes/116226/take Question 8 0.2 pts Place the images in order of weakest attraction to strongest attraction. 1 2 3 +1 -1 +2 -2 +3 -3 100 pm 100 pm 200 pm O 3 2<1 O 3 1<2 O 1<2 3 1 3...
Question 6 (1 point) Which of the following has six energy levels surrounding its nucleus? O oxygen (0) Oselenium (Se) O cesium (Cs)
Last question.
at is the total charge of the uranium nucleus? (The neutral uranium atom has 92 electrons.) 7 x10-17c ou are correct. Previous Tries hat is the magnitude of its electric field at a distance of 9.98x10-10 m from the nucleus? 33x1011 N/C You are correct. Previous Tries What is the magnitude of the force on an electron at that distance? 2.13x10-8 N You are correct. Previous Tries What would the magnitude of the force be if the tdistance...
1) Define the following: matter, element, atom, trace element, proton, electron, neutron, atomic number, mass number, isotopes, radioisotope, molecule, compound, salt, ion. 2) List the 6 elements that make up about 99% of the weight of an organism. 3) What are the functions of the trace elements iron, fluorine (fluoride), and iodine? 4) An iodine deficiency can result in goiter. True/False 5) Where are protons, neutrons and electrons located? 6) Can you determine the atomic number and mass number from...
Question 18 (1 point) A 4pz orbital in a many-electron atom is degenerate with ________. Question 18 options: 1) 5s 2) 4d2 3) 4dxy 4) 4px 5) 3pz
QUESTION 52 Which of the following is/are true? Select all that apply. Ti has 2 valence electrons and 20 core electrons Bi has 5 valence electrons. 3 of which are unpaired Avalence electron in its ground state in Sb could have the quantum numbers n-5.1-2. m o ms - 1/2 Ca and Zn have the same number of valence electrons QUESTION 53 Which of the following is/are true? Select all that apply The ground-state electron configuration for B.Sis[Xe] 4:14 10...
Question 3 (1 point) Saved Alcohol contains 4 kcal/g True False Question 4 (1 point) The Acceptable Macronutrient Distribution Ranges are daily percentage energy intake values for the macronutrients fat, carbohydrate, and protein True False Question 5 (1 point) Nutrient density is the idea that the more nutrients and the fewer kcal a food provides, the lower its nutrient density True False
Which statement is true regarding [Al(OH)4 ]- ion? (1) Its central atom hybridization is sp2 . (2) Its total number of lone pairs of electrons is 8. (3) It contains d electrons. (4) Its number of sigma ^σ& bonds is 4. (5) Its total number of electrons in the valence shell is 28. Pls explain the answer.
Please explain.
0/4 pts Question 5 Electrons exist in orbitals within an atom. Bohr's model described a single electron system well. But the energy level for orbitals change when as you add a second and more electron. In a single electron system, there are (a)_orbital(s) at the n-2 level. These n-2 orbital(s) exist at (b) sub-level(s) in the atom. In a multi-electron system, (c)_orbital(s) at the n-2 level. These n-2 orbital(s) exist at (d)sub-level(s) in the atom. Bohr was never...