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Concept explainers
(a)
Interpretation:
The group number and condensed electron configuration of an element corresponding to the given electron-dot symbol are to be determined.
Concept introduction:
Lewis electron-dot symbol is a representation employed to donate the valence electron present in the atom. It includes atom symbol to represent inner electrons and nucleus and the dots represent the valence present in the atom.
Steps to write the Lewis electron-dot symbol is as follows:
1. Determine the group of the atom so that the valence electron present in it can be calculated.
2. Put one dot at a time around the four sides of the atom.
3. Add more dots and pair them to complete the valence electron present in the atom.
The number of dots around metal is the number of electrons that metal can lose to form cation and the number of dots around nonmetal is the number of electrons that nonmetal can gain to form anion or the number of electrons that non-metal can share to form a covalent bond.
The condensed electronic configuration is a way to write the electronic configuration where the inner shell configurations are compressed to the nearest noble gas configuration and only the valence shell configuration is written in the expanded form.
(b)
Interpretation:
The group number and condensed electron configuration of an element corresponding to the given electron-dot symbol are to be determined.
Concept introduction:
Lewis electron-dot symbol is a representation employed to donate the valence electron present in the atom. It includes atom symbol to represent inner electrons and nucleus and the dots represent the valence present in the atom.
Steps to write the Lewis electron-dot symbol is as follows:
1. Determine the group of the atom so that the valence electron present in it can be calculated.
2. Put one dot at a time around the four sides of the atom.
3. Add more dots and pair them to complete the valence electron present in the atom.
The number of dots around metal is the number of electrons that metal can lose to form cation and the number of dots around nonmetal is the number of electrons that nonmetal can gain to form anion or the number of electrons that non-metal can share to form a covalent bond.
The condensed electronic configuration is a way to write the electronic configuration where the inner shell configurations are compressed to the nearest noble gas configuration and only the valence shell configuration is written in the expanded form.
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Chapter 9 Solutions
ALEKS 360 for Silberberg Chemistry: The Molecular Nature of Matter and Change
- Nonearrow_forwardNonearrow_forwardIn the solid state, oxalic acid occurs as a dihydrate with the formula H2C2O4 C+2H2O. Use this formula to calculate the formula weight of oxalic acid. Use the calculated formula weight and the number of moles (0.00504mol) of oxalic acid in each titrated unknown sample recorded in Table 6.4 to calculate the number of grams of pure oxalic acid dihydrate contained in each titrated unknown sample.arrow_forward
- 1. Consider a pair of elements with 2p and 4p valence orbitals (e.g., N and Se). Draw their (2p and 4p AO's) radial probability plots, and sketch their angular profiles. Then, consider these orbitals from the two atoms forming a homonuclear л-bond. Which element would have a stronger bond, and why? (4 points)arrow_forwardWrite the reaction and show the mechanism of the reaction. Include the mechanism for formation of the NO2+ 2. Explain, using resonance structures, why the meta isomer is formed. Draw possible resonance structures for ortho, meta and para.arrow_forwardNonearrow_forward
- 3. A molecular form of "dicarbon", C2, can be generated in gas phase. Its bond dissociation energy has been determined at 599 kJ/mol. Use molecular orbital theory to explain why energy of dissociation for C₂+ is 513 kJ/mol, and that for C2² is 818 kJ/mol. (10 points)arrow_forward9.73 g of lead(IV) chloride contains enough Cl- ions to make ____ g of magnesium chloride.arrow_forward6. a) C2's. Phosphorus pentafluoride PF5 belongs to D3h symmetry group. Draw the structure of the molecule, identify principal axis of rotation and perpendicular (4 points) b) assume that the principal axis of rotation is aligned with z axis, assign symmetry labels (such as a1, b2, etc.) to the following atomic orbitals of the P atom. (character table for this group is included in the Supplemental material). 3s 3pz (6 points) 3dz²arrow_forward
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