Use Mendeleev’s Periodic Table to predict the formulae for the oxides of the following elements: K, C, Al, Si, Ba

Academic Chemistry NCERT Class 10

The formula for the oxides are given below:

K₂O, CO₂, Al₂O₃, SiO₂, BaO.

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Updated on: 13-Mar-2023

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Compare and contrast the arrangement of elements in Mendeleev’s Periodic Table and the Modern Periodic Table.
In Mendeleev’s periodic table, gaps were left for the elements to be discovered later. Which one of the following elements found a place in the periodic table later?GermaniumChlorineOxygenSilicon
Consider the following elements:Na, Ca, Al, K, Mg, Li (a) Which of these elements belong to the same period of the periodic table? (b) Which of these elements belong to the same group of the periodic table?
Arrange the following elements in the order of their decreasing metallic character Na, Si, Cl, Mg, Al.Cl > Si > Al > Mg > NaNa > Mg > Al > Si > ClNa > Al > Mg > Cl > SiAl > Na > Si > Ca > Mg
How could the modern periodic table remove various anomalies of Mendeleev’s Periodic Table?
(a) State the merits of Mendeleev’s classification of elements.(b) Describe two anomalies of Mendeleev’s periodic classification of elements.
(a) State Mendeleev’s periodic law.(b) What chemical properties of elements were used by Mendeleev in creating his periodic table? (c) State any three limitations of Mendeleev’s classification of elements. (d) Besides gallium, which two other elements have since been discovered for which Mendeleev had left gaps in his periodic table ? (e) Which group of elements was missing from Mendeleev’s original periodic table?
Name two elements whose properties were predicted on the basis of their positions in Mendeleev’s periodic table.
In Mendeleev's Periodic Table, gaps were left for the elements to be discovered later. Which of the following elements found a place in the Periodic Table later?ChlorineSiliconOxygenGermanium
Which group of elements could be placed in Mendeleev’s ′ Periodic Table without disturbing the original order? Give reason.
What was the Mendeleev’s basis for the classification of elements?
Give the formulae of the compounds that would be formed by the combination of the following pairs of elements:(a) Mg and N2(b) Li and O2(c) Al and Cl2(d) K and H
According to Mendeleev’s Periodic Law, the elements were arranged in the periodic table in the order of(a) increasing atomic number(b) decreasing atomic number(c) increasing atomic masses(d) decreasing atomic masses
Name of 118 elements in the periodic table.
Give the formulae of the stable binary compounds that would be formed by the combination of the following pairs of elements.(a) Mg and N2(b) Li and O2(c) Al and Cl2(d) K and O2

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