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In an alternate universe, the smallest negatively chargedparticle, analogous to our electron, is called a blorvek. Todetermine the charge on a single blorvek, an experiment likeMillikan’s with charged oil droplets ‘as carried out, and thefollowing results were recorded:
(a) Based on these observations, what is the largest possiblevalue for the charge on a blorvek?
(b) Further experiments found a droplet with a charge of
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Chapter 2 Solutions
CHEMISTRY-W/MASTERING CHEMISTRY ACCESS
- 2-89 Assume that a new element has been discovered with atomic number 117. Its chemical properties should be similar to those of astatine (At). Predict whether the new element’s ionization energy will be greater than, the same as, or smaller than that of: (a)At (b)Raarrow_forwardWhich of the following is true about an individual atom? Explain. a. An individual atom should be considered to be a solid. b. An individual atom should be considered to be a liquid. c. An individual atom should be considered to be a gas. d. The state of the atom depends on which element it is. e. An individual atom cannot be considered to be a solid, liquid, or gas. Justify your choice, and for choices you did not pick, explain what is wrong with them.arrow_forward2.84 Early attempts to arrange the elements often focused on atomic weight. Mendeleev considered a number of properties in addition to atomic weight, so he realized that some elements seemed out of place when ordered by atomic weight. Using the modern periodic table, identify elements for which Mendeleev must have had to switch the order in order to get the correct sequence of elements.arrow_forward
- Illustrate the sharing of electrons of each covalent compound using the Bohr Model. Apply the octet rule if possible. (A) A molecule composed of two chlorine atoms. (b) A molecule composed of a hydrogen atom and a bromine atom. (c) A molecule composed of 2 hydrogen atoms. (d) A molecule composed of a hydrogen atom and a chlorine atom.arrow_forward(b) A new element, "X", is discovered and found to have 2 electrons in its outer level. Is X a metal or non-metal? Predict the formula its ion would have in any ionic compounds it forms.arrow_forwardDiscussing this chapter, a classmate says, “Since elementsthat form cations are metals and elements that form anionsare nonmetals, elements that do not form ions are metalloids.”Do you agree or disagree?arrow_forward
- (a) Group 1A positive + The elements in group 1A configuration. an electron (obtain a charge) in order to achieve a noble gas ...arrow_forwardQ2. This question is about the periodicity of the Period 3 elements. (a) State and explain the general trend in first ionisation energy across Period 3. Give one example of an element which deviates from the general trend in first (b) ionisation energy across Period 3. Explain why this deviation occurs. Page 3 of 12 (c) The table shows successive ionisation energies of an element Y in Period 3. lonisation number 1 2 3 4 5 6 7 8 lonisation energy kJ mol- 1000 2260 3390 4540 6990 8490 27 100 31 700 Identify element Y Explain your answer using data from the table. (d) Identify the Period 3 element that has the highest melting point. Explain your answer by reference to structure and bonding.arrow_forwardHow many inner, outer, and valence electrons are present in an atom of each of the following elements? (a) Br (b) Cs (c) Cr (d) Sr (e) Farrow_forward
- According to Coulomb’s law, what happens to the potential energy of two oppositely charged particles as they get closer together?(a) Their potential energy decreases.(b) Their potential energy increases.(c) Their potential energy does not change.arrow_forwarda ) Eva l u a te t h e expre s s i o n s 2 x 1, 2 x (1 + 3),2 x(1 + 3 + 5), and 2 x (1 + 3 + 5 + 7). (b) How do the atomic numbers of the noble gases relate to the numbersfrom part (a)? (c) What topic discussed is thesource of the number “2” in the expressions in part (a)?arrow_forwardBefore Mendeleev published his periodic table, Döbereiner grouped elements with similar properties into “triads,” in whichthe unknown properties of one member could be predicted byaveraging known values of the properties of the others. To test this idea, predict the values of the following quantities:(a) The atomic mass of K from the atomic masses of Na and Rb(b) The melting point of Br₂ from the melting points of Cl₂(-101.0°C) and I₂(113.6°C) (actual value -7.2°C)arrow_forward
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