Videos
(a)
Interpretation:Name and formula of binary compound formed from
Concept introduction:The proportions of atoms in a compound are represented with
(b)
Interpretation:Name and formula of binary compound formed from
Concept introduction:The proportions of atoms in a compound are represented with symbols of element and it is termed as chemical formula. Chemical formula is decided by the valency of the elements. Number of electrons of element in outermost shell is termed as its valency. If number of valence electrons is equal to 4 or less than 4 then valency will be valence electrons. For more than 4 valence electrons valency is calculated by subtraction of valence electrons from octet that is 8.
(c)
Interpretation:Name and formula of binary compound formed from
Concept introduction:The proportions of atoms in a compound are represented with symbols of element and it is termed as chemical formula. Chemical formula is decided by the valency of the elements. Number of electrons of element in outermost shell is termed as its valency. If number of valence electrons is equal to 4 or less than 4 then valency will be valence electrons. For more than 4 valence electrons valency is calculated by subtraction of valence electrons from octet that is 8.
(d)
Interpretation:Name and formula of binary compound formed from
Concept introduction:The proportions of atoms in a compound are represented with symbols of element and it is termed as chemical formula. Chemical formula is decided by the valency of the elements. Number of electrons of element in outermost shell is termed as its valency. If number of valence electrons is equal to 4 or less than 4 then valency will be valence electrons. For more than 4 valence electrons valency is calculated by subtraction of valence electrons from octet that is 8.
(e)
Interpretation:Name and formula of binary compound formed from
Concept introduction:The proportions of atoms in a compound are represented with symbols of element and it is termed as chemical formula. Chemical formula is decided by the valency of the elements. Number of electrons of element in outermost shell is termed as its valency. If number of valence electrons is equal to 4 or less than 4 then valency will be valence electrons. For more than 4 valence electrons valency is calculated by subtraction of valence electrons from octet that is 8.
(f)
Interpretation:Name and formula of binary compound formed from
Concept introduction:The proportions of atoms in a compound are represented with symbols of element and it is termed as chemical formula. Chemical formula is decided by the valency of the elements. Number of electrons of element in outermost shell is termed as its valency. If number of valence electrons is equal to 4 or less than 4 then valency will be valence electrons. For more than 4 valence electrons valency is calculated by subtraction of valence electrons from octet that is 8.
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Chapter 12 Solutions
EBK CHEMICAL PRINCIPLES
- The spectra of hydrogen and of calcium are shown in Figure 6.13. What causes the lines in these spectra? Why are the colors of the lines different? Suggest a reason for the observation that the spectrum of calcium is more complicated than the spectrum of hydrogen.arrow_forwardHow are the Bohr model and the quantum mechanical model of the hydrogen atom similar? How are they different?arrow_forwardDetermine whether each statement that follows is true or false: a Electron energies are quantized in excited states but not in the ground state. b Line spectra of the elements are experimental evidence of the quantization of electron energies. c Energy is released as an electron passes from ground state to an excited state. d The energy of an electron may be between two quantized energy levels. e The Bohr model explanation of line spectra is still thought to be correct. f The quantum mechanical model of the atom describes orbitals in which electrons travel around the nucleus. g Orbitals are regions in which there is a high probability of finding an electron. h All energy sublevels have the same number of orbitals. i The 3p orbitals of an atom are larger than its 2p orbitals but smaller than its 4p orbitals. j At a given sublevel, the maximum number of d electrons is 5. k The halogens are found in Group 7A/17 of the periodic table. l The dot structure of the alkaline earths is X, where X is the symbol of element in the family. m Stable ions formed by alkaline earth metals are isoelectronic with noble gas atoms. n Atomic numbers 23 and 45 both belong to transition elements. o Atomic number 52, 35, and 18 are arranged in order of increasing atomic size. p Atomic number 7, 16, and 35 are all nonmetals.arrow_forward
- Which statement is true of the quantum mechanical model, but not of the Bohr model? a. Electrons orbit the nucleus in simple circular orbits, just like planets orbit the Sun. b. The exact path that an electron follows within an atom cannot be specified. c. The electron is attracted to the nucleus of the atom.arrow_forwardWhat is the difference between core electrons and valence electrons? Why do we emphasize the valence electrons in an atom when discussing atomic properties? What is the relationship between valence electrons and elements in the same group of the periodic table?arrow_forwardWhich of the following statements is(are) true? a. The 2s orbital in the hydrogen atom is larger than the 3s orbital also in the hydrogen atom. b. The Bohr model of the hydrogen atom has been found to be incorrect. c. The hydrogen atom has quantized energy levels. d. An orbital is the same as a Bohr orbit. e. The third energy level has three sublevels, the s, p, and d sublevels.arrow_forward
- Using orbital box diagrams, depict an electron configuration for each of the following ions: (a) Mg2+, (b) K+, (c) Cl, and (d) O2.arrow_forwardSuppose that the spin quantum number could have the values 12,0 and 12 . Assuming that the rules governing the values of the other quantum numbers and the order of filling sublevels were unchanged, (a) what would be the electron capacity of an s sublevel? a p sublevel? a d sublevel? (b) how many electrons could fit in the n=3 level? (c) what would be the electron configuration of the element with atomic number 8? 17?arrow_forwardExplain electron from a quantum mechanical perspective, including a discussion of atomic radii, probabilities, and orbitals.arrow_forward
- r Questions 11—13, you will need to consider ionizations beyond the first ionization energy. For example, the second ionization energy is the energy to remove a second electron from an element. Compare the first ionization energy of helium to its second ionization energy, remembering that both electrons come from the 1s orbital. l> X Y First 170 200 second 350 400 Third 1800 3500 fouth 2500 5000 entify the elements X and Y. There may be more than one answer. so explain completely.arrow_forwardHow are the electron arrangements in a given group (vertical column) of the periodic table related? How is this relationship manifested in the properties of the elements in the given group?arrow_forwardDescribe briefly why the study of electromagnetic radiation bas been important to our understanding of the arrangement of electrons in atomsarrow_forward
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