Isotops - Study guides, Revision notes & Summaries

CHEMISTRY A LEVEL WITH SATISFIED SOLUTIONS What are the two elements which are exceptions to the electron configuration? - CORRECT-The two exceptions for this is copper and chromium. In both cases, the 4s subshell contains only one electron, even though there are electrons in the 3d subshell. To explain this, its because the 3d subshell is more stable when it is either half full, or completely full. So in the case of chromium, by having only one electron in the 4s subshell, ...

CHEMISTRY A LEVEL WITH SATISFIED SOLUTIONS What are the two elements which are exceptions to the electron configuration? - CORRECT-The two exceptions for this is copper and chromium. In both cases, the 4s subshell contains only one electron, even though there are electrons in the 3d subshell. To explain this, its because the 3d subshell is more stable when it is either half full, or completely full. So in the case of chromium, by having only one electron in the 4s subshell, ...

CHEMISTRY A LEVEL WITH SATISFIED SOLUTIONS What are the two elements which are exceptions to the electron configuration? - CORRECT-The two exceptions for this is copper and chromium. In both cases, the 4s subshell contains only one electron, even though there are electrons in the 3d subshell. To explain this, its because the 3d subshell is more stable when it is either half full, or completely full. So in the case of chromium, by having only one electron in the 4s subshell, ...

CHEMISTRY A LEVEL WITH SATISFIED SOLUTIONS What are the two elements which are exceptions to the electron configuration? - CORRECT-The two exceptions for this is copper and chromium. In both cases, the 4s subshell contains only one electron, even though there are electrons in the 3d subshell. To explain this, its because the 3d subshell is more stable when it is either half full, or completely full. So in the case of chromium, by having only one electron in the 4s subshell, ...

1. which element is in the d-block of the periodic table? A- -Selenium B- -Antimony C- -Tantalum D- -Lead - Ans .C 2. There are 392mol of pure gold in a bar measuring 10cm by 109cm by 40cm. What is the denisty of the gold? A- -193 B- -19.3 C- -1.93 D- -0.193 - Ans .B 3. Which species contains an element with oxidation state of +4? A- -NO2+ B- -ClO3- C- -H2SO3 D- -PCl5 - Ans .C 4. Ions of 2 isotops of Iron are: 53Fe2+ and 56Fe2+ Which statement in correct? A- -The ions of both...

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Atoms and Elements Subatomic Particles Atomic Number and Mass Number Electron Arrangement:

Class 11 Physical Chemistry notes cover core topics like atomic structure, chemical bonding, states of matter, thermodynamics, and equilibrium. They introduce essential concepts, formulas, and examples, providing a foundation for advanced chemistry studies and exam preparation. Basic definition used in atomic structure, and knowledge about physical chemistry.