Last element with 11 protons (atomic number) is present in the seventh period and eighteenth group. The given element is... View Article
Number of elements till sixth period = 2+8+8+18+18+32=86 Number of extra electrons in the atom with atomic number 115= 115... View Article
Second period ends with atomic number 10. Seventeenth group in third period =10+7 =17 Atomic number of the element is... View Article
Position of hydrogen Position for hydrogen that resembles both electropositive alkali metals and electronegative Non-metallic halogens, but placed along with... View Article
Arrangement of elements as per the increasing atomic number (protons) incidentally reflects the electronic configuration of elemental atoms. Number of... View Article
MENDELEEV VS MODERN PERIODIC TABLE Mendeleev’s periodic table is, based on the relation of elements’ properties as dependent on the... View Article
Modern periodic table retains some of the structures of the Mendeleev’s periodic table. But it is much more elaborate and... View Article
Elements’ physical and chemical properties are a periodic function of their atomic numbers (or protons). Modern periodic law states that... View Article
Answer: A tabular arrangement of elements in groups and periods that highlights the regular trends in properties of elements is... View Article
Drawbacks of Meter Bridge Experiment: Solution: Meter Bridge is an apparatus that is used to find the resistance of a... View Article
Meter bridge experiment is used to verify the laws of resistance and to calculate unknown resistances. PRINCIPLE: It is a... View Article
It consists of a straight and uniform wire of materials like Manganin. The wire is of one meter length stretched... View Article
Mendeleev’s periodic table is, more accepted for its originality and boldness in making corrections in the properties and predicting unknown... View Article
Mendeleev’s periodic table is arrangement of elements on increasing atomic weights. But, it gave more importance on properties. Nevertheless, the... View Article
Noble gases were, discovered later to the proposed Mendeleev’s periodic table. As the noble gases are inert and generally do... View Article
Q: Element Oxide formula Hydride formula Group number A A2O3 AH3 B A2O7 AH C A2O5 AH3 ... View Article
Mendeleev’s periodic table was a good attempt to classify sixty elements known at this time. There some noteworthy aberrations in... View Article
Answer: Mendeleev claimed the famous periodic law that “Element properties are a periodic function of their atomic weight.” Mendeleev placed... View Article
Mendeleev claimed the famous periodic law that “Element properties are a periodic function of their atomic weight.” Mendeleev placed elements... View Article
Mendeleev’s periodic table is an arrangement of elements in an increasing atomic mass order in a tablet form, such that... View Article
