Periodic table
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Periodic table - Marcador
Periodic table - Detalles
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Preguntas:
76 preguntas
| 🇬🇧 | 🇬🇧 |
| What are lanthanides? | Rare earth metals |
| What are lanthanides? | Rare earth metals |
| Who put forth the Modern Periodic table? | Henry Moseley |
| What was the defect in mendeleev's periodic table? | Could not explain the positions of rare earth metals and isotopes |
| What is the modern periodic table based on? | Atomic number |
| Niels Bohr gave what? | The long (extended) form of the modern periodic table |
| What are the most reactive metals? | Alkali metals |
| What is an alkali? | Bases soluble in water |
| Give the typical meaning of the word "halogen" | Salt formers |
| What do halogens react with to form salts? | Alkali metals or alkaline earth metals |
| Who forms weaker alkalis with water than group 1 elements? | Alkaline earth metals |
| What are elements present in the group 3-12 known as? | Transition elements |
| Which elements have their two outermost shells incomplete? | Transition elements |
| What are chalcogens? | Ore forming elements |
| What does a period represent? | Number o f shells |
| What does a group represent? | Number of valence electrons |
| What are lanthanides? | Rare earth metals |
| What are actinides? | Radioactive |
| What is the cause of periodicity? | Recurrence of similar electronic configuration |
| Which elements have same number of valence electrons? | Elements of the same group |
| What happens to number of shells down a group? | They increase successfully |
| What happens to number of shells while moving across a period? | The number of shells remain the same |
| What happens to number of valence electrons while moving across a period? | They increase successfully bitch |
| How are elements arranged in a periodic table? | Increasing atomic number |
| What is nuclear charge? | Positive charge present in the atom/protons/electrons |
| What does an increase in nuclear charge do to the size of an atom? | Increases the size of an atom |
| Why does atomic size increase down a group? | Because number of shells increase |
| Why does atomic size decrease across a period? | Because nuclear charge increases |
| Why are the atoms of inert gases bigger? | They have maximum electron repulsion |
| Is the size of an inert gas atom bigger than the alkali metal of the same group? | No , go f*ck yourself. :) |
| What is the size of a cation from the parent atom? | Always smaller |
| What are atoms having the same electronic configuration called? | Isoelectronic ions |
| What effect does atomic size have on metallic character? | Increases metallic character |
| What effect does nuclear charge have on metallic character? | Decreases metallic character |
| Elements which lose electrons to complete their octet are? | Reducing agents |
| What happens to metallic character as we move down a group? | Metallic character increases |
| What happens to metallic character across a period? | Metallic character decreases |
| What happens to non metallic character down a group | Non metallic character decreases dumbo |
| What happens to non metallic character across a period? | Non metallic character increases |
| What happens to oxides across a period? | Decreasing basic nature and finally become acidic |
| Most reactive metal? | Francium |
| Most reactive non metal? | Fluorine |
| Energy required to remove an electron from a neutral isolated gaseous atom and convert it into a positively charged gaseous ion? | Ionization potential |
| What is the SI unit of Ionization Potential? | Kilojoule per mole |
| What happens to ionization energy down a group? | It decreases :) |
| Why is Ionization energy of Francium not known? | Cuz it's a radioactive bitch |
| Amount of energy released while converting an atom to anion by addition of electrons | Electron affinity |
| What effect does nuclear charge have on electron affinity? | It increases with an increase |
| What happens to electron affinity down a group? | It decreases |
| Tendency of an atom to attract the shared pair of electrons towards itself is called? | Electronegativity |
| Who devised the most widely used scale of electronegativity? | Some Linus freaking pauling |
| What happens to electronegativity down a group? | It decreases |