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Descrição
FlashCards por Chuleeporn Thanomsilp, atualizado more than 1 year ago
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Criado por Chuleeporn Thanomsilp
mais de 10 anos atrás
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| Questão | Responda |
| Chemical Bonding | A strong attractive force that exists between certain atoms in a substance. |
| Born-Haber Cycle | Energies involve in forming ionic compounds. |
| Lattice energy | The energy needed to separate an ionic solid into isolated ions in the gas phase. |
| Cation | Positive charged ion occurs when atom loses electron (s). |
| Anion | Negative charged ion occurs when atom gains electron (s). |
| Isoelectronic ion | Ions that have equal number of electrons hence they have identical electron configurations. |
| What is the chemical bond between metal + non-metal combination? | Ionic bond |
| Combination of non-metal + non-metal atoms creates____________compound. | covalent |
| Describe ionic bond | An ionic bond is a chemical bond formed by the electrostatic attraction between positive and negative ions. |
| Write Lewis symbols for the following elements: Al, I, Se, Ar |
Image:
lewis_structure (image/jpg)
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Image:
ionic_sizes (image/jpg)
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| Give formula and name of ionic compound formed by combination of Mg and Br. | |
| What is the formula of ammonium sulphate? | |
| Describe covalent bond | A chemical bond formed by the sharing of a pair of electrons between atoms. |
| Three types of covalent bond using different number of shared electrons. | single, double and triple bonds. single bond: 2 shared electrons. double bond: 4 shared electrons. triple bond: 6 shared electrons. |
| What is Bond length? | The distance between nuclei at the minimum potential energy i.e. the most stable. |
| What is Bond energy? | The amount of energy required for breaking the bond i.e. to separate the two atoms linked by covalent bond. This is also called “bond dissociation energy”. |
| What is coordinate covalent bond? | A coordinate covalent bond is a bond formed when both electrons of the bond are donated by one atom. |
| What is Electronegativity? | An ability of an atom to draw bonding electrons to itself. |
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