Practice ProblemBUILD
Identify the elements represented by (a)
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Chemistry
- Part A What is the mass number of an ion with 106 electrons, 158 neutrons, and a +1 charge Express your answer as an integer. I View Available Hint(s) 17 ΑΣΦ MAXX ? Δarrow_forwardWhich of the following electronic configurations is most characteristic of a non-metallic element? (a) 1s2 2s2 2p6 3p1 (b) 1s2 2s2 2p6 3s1 (c) 1s2 2s2 2p6 3s2 (d) 1s2 2s2 2p6 3s2 3p5arrow_forwardelectron configuration of atoms 2 6 [G]ns np [G]ns²mf¹4 10 2 [G]ns md¹0 np² blocks U U S S P location of elements (check all that apply) D U J P P metals or nonmetals? X metals nonmetals metalloids metals nonmetals metalloids metals nonmetals metalloids 5arrow_forward
- 00 e G QUESTION 15 The first ionization energy of an element is 3.72x103 kJ/mol. What is the frequency of light in units of seconds (absorbed) which can ionize an atom of the element? Enter the answer in exponential (scientific) notation to 3 significant figures Silicon (Si) atom? ling yalue, S)arrow_forwardAn element in its ground state has electron configuration: [Ne]3s² What is this element's chemical symbol? Answer:arrow_forwardWhich of the following elements is/are main group element or elements? Question 12 options: A) Rb B) Se C) Mn D) A and B E) B and Carrow_forward
- The elements of the periodic . Table can be divided into main categories? (A) 3 (B) 5 (C) 4 (D) 2arrow_forward▼ Part A An element with 5 electrons in its outer shell is in which group on the periodic table? Group 4A Group 4A O Group 5A Group 7A Submit Request Answerarrow_forwardAdd-ons Help Last edit was 5 minutes ago Background Layout Theme Transition | 1 I|I 2. | 3 |.4 | 5. | 6. L 7.II Atomic Radius Practice Answer each question below with complete sentences. Your answer for each question should include the following 3 parts. Which element will be larger/smaller If the elements are in the same period (row) or the same family (column) Why the element will be larger/smaller in terms of nuclear charge or energy levels 1. Which element will have a smaller atomic radius; Be or Sr? DELLarrow_forward
- SQE6RZR GENERAL CHEMISTRY REVIEW Understanding periodic trends in atomic size Re-order each list in the table below, if necessary, so that the atoms or ions in it are listed in order of decreasing size. atoms or ions atoms or ions in order of decreasing size OP Al, Si, Mg O. 0.0 ? Kr, Se, Se 0.0.0 Br ,I ,F 0.0.0 Check Explanation 72021 McGraw Hill LLC Al Rights Resenved Terms a 90°F Rain coming %23 e Type here to searcharrow_forwardPeriodic table trends multiple choice: 1. What is the effective nuclear charge that a valence electron in a phosphorus atom experiences? a) 15+ , b) 13+, c) 5+, d) 2+ 2. Which of the following is false? a) The nuclear charge is equivalent to the number of electrons , b) Electrons in an atom repel each other , c) Electrons in an atom are attracted to the nucleus , d) Shielding electrons prevent outer electrons from feeling the full nuclear charge. 3. In which of the following pairs does the first atom have a greater electron affinity than the second? a) P and S , b) Na and Mg , c) N and P , d) Se and S 4. Which of the following is isoelectronic to the chloride ion, Cl-? a) Ne atom , b) fluoride ion (F-) , c) sodium ion (Na+) , d) sulphide ion (S-2) 5. Consider the following elements: P, Na, N. Which of the following places these elements in order of increasing ionization energy (lowest to greatest)? a) P, Na, N b) Na, P, N c) Na, N, P d) N, Na, Parrow_forwardInfrared radiation falls in the wavelength region of 1.00 x 10 to 1.00 x 10-³ meters. What is the wavelength of infrared radiation that has an energy of 3.50 x 10-25 kJ/photon? Wavelength [ m Submit Answer Retry Entire Group remainingarrow_forward
- Introduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage Learning