(a)
Interpretation:
The elements, selenium, oxygen and tellurium has to be arranged in the decreasing order ionization energy.
Concept Introduction:
First ionization energy: The ionization energy is the minimum energy required to remove the electron from an isolated atom which is in the gaseous state results to give gaseous ion with one positive charge.
Down the group, generally first ionization energies decreases whereas across the period, first ionization energies typically increases.
(b)
Interpretation:
The elements, gold, tantalum and osmium has to be arranged in the decreasing order ionization energy.
Concept Introduction:
Refer to (a).
(c)
Interpretation:
The elements, lead, barium and cesium has to be arranged in the decreasing order ionization energy.
Concept Introduction:
Refer to (a).
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ACHIEVE/CHEMICAL PRINCIPLES ACCESS 1TERM
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- Question:Consider two elements, Element A and Element B, from the periodic table. Element A is located in Group 1 and Period 3, while Element B is located in Group 16 and Period 2. (a) Which element would have a larger atomic radius, Element A or Element B? Justify your answer. (b) Predict the ionization energy of Element A and Element B. Which element would have a higher ionization energy? Explain your reasoning. (c) Based on their positions in the periodic table, which element would be more likely to form a stable cation? Provide a brief explanation for your choice.arrow_forwardWhich of these isoelectronic ions, Ba2+, Cs*, or La3+, is (a) the largest? (b) the smallest? Explain your reasoning.arrow_forwardUsing only their location in the periodic table, rank the atoms in each set by decreasing atomic size. Explain your answers. (a) Mg, Be, Ba (b) Se, Br, Cl (c) Ca, Se, Gaarrow_forward
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- Classify each of the following elements as a main-group or transition element. Also,specify whether they are metals, metalloids, or nonmetals: Na, Re, S, I, Kr, Mg, U, Si, B, Al, As, H.arrow_forward18. (a) What did Ernest Rutherford observe during his experiments? (b) What did Niels Bohr observe during his experiments? (c) How did the work of each scientist contribute to the development of the planetary model of the atom? Explain your ideas in at least four (4) sentences.arrow_forward4. Calculate (A) the energy of an electron transitioning from n=5 to n=6. (B) the wavelength of light emitted from this transition.arrow_forward
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