(a)
Interpretation:
The electron dot structure of Potassium has to be given.
Concept Introduction:
Electron dot structure:
A Lewis dot diagram is a representation of the valence electrons of an atom that uses dots around the
Example:
The valence electron of Mg is two it can be represented in electron dot structure as,
(b)
Interpretation:
The electron dot structure of Boron has to be given.
Concept Introduction:
Refer to part (a).
(c)
Interpretation:
The electron dot structure of Fluorine has to be given.
Concept Introduction:
Refer to part (a).
(d)
Interpretation:
The electron dot structure of Calcium has to be given.
Concept Introduction:
Refer to part (a).
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Principles of General, Organic, Biological Chemistry
- 2-59 You are presented with a Lewis dot structure of element X as X.. To which two groups in the Periodic Table might this element belong?arrow_forward2-47 Which element in each pair is more metallic? (a) Silicon or aluminum (b) Arsenic or phosphorus (c) Gallium or germanium (d) Gallium or aluminumarrow_forward2-69 (Chemical Connections 2A) Why does the body need sulfur, calcium, and iron?arrow_forward
- Write an electron-dot symbol for each element: (a) beryllium; (b) silicon; (c) iodine; (d) magnesium; (e) argon.arrow_forwardHow many valence electrons does an element in each group contain: (a) 2A; (b) 4A; (c) 7A?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_forward
- 3- (a) Write out the full electron configuration of Calcium (Ca). (b) How many electrons are in the n=3 shell of Calcium?arrow_forward28. (a) In Figure P7.7, which sphere could represent a Na atom, Nation, and K atom? Provide an explanation for your choice. (b) In Figure P7.7, which sphere could represent an O atom, S atom, and S2- ion? Provide an explanation for your choice. FIGURE P7.7 (b) (c)arrow_forwardGive the period and group number for each element: (a) oxygen; (b) calcium; (c) phosphorus; (d) platinum; (e) iodine.arrow_forward
- (c) Silicon (Si) is the most common chemical element in today's semiconductor industry. It has an atomic number of 14 and belongs to the Group IV (4) of the periodic table with its most common isotope being Si-29. (i) (ii) (iii) Explain what an isotope is. How many protons and how many neutrons are in the nucleus of this Silicon isotope? What is the electron configuration of Si?arrow_forwardThe most common isotope of oxygen has a mass number of 16, but two other isotopes having mass numbers of 17 and 18 are also known. For each isotope, give the following information: (a) the number of protons; (b) the number of neutrons; (c) the number of electrons in the neutral atom; (d) the group number; (e) the element symbol using superscripts and subscripts.arrow_forward(a) Identify the number of electrons in the ground-state outer shell of atomic oxygen (atomic number 8).(b) How many electrons are in the ground-state outer shell of fluorine?arrow_forward
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