Electronic configuration of an element gives the information of valence electrons and number of shell present in the element. We get the information of group number after knowing valence electrons. Number shell present in an element is equal to period number. Thus, by knowing electronic configuratioRead more
Electronic configuration of an element gives the information of valence electrons and number of shell present in the element.
We get the information of group number after knowing valence electrons.
Number shell present in an element is equal to period number.
Thus, by knowing electronic configuration we know the group number and period number of an element, which is the position of element in periodic table.
(i) The general formula for oxides of 1st, 2nd, third and 4th group are R₂O, RO, R₂O₃ and RO₂ respectively in the Mendeleev’s Periodic Table, where R denotes the element. (ii) Since, Potassium (K) belongs to 1st group, thus, formula of its oxide would be K₂O. (iii) Barium (Ba) belongs to 2nd group,Read more
(i) The general formula for oxides of 1st, 2nd, third and 4th group are R₂O, RO, R₂O₃ and RO₂ respectively in the Mendeleev’s Periodic Table, where R denotes the element.
(ii) Since, Potassium (K) belongs to 1st group, thus, formula of its oxide would be K₂O.
(iii) Barium (Ba) belongs to 2nd group, thus formula of its oxide would be BaO.
(iv) Aluminium (Al) belongs to the 3rd group, thus, formula of its oxide would be Al₂O₃.
(v) Carbon (C) and Silicon (Si) belong to the 4th group, thus, formula of its oxide would be CO₂ and SiO₂ respectively.
(vi) Thus, formula of oxides of the given elements would be K₂O, CO₂, Al₂O₃, SiO₂ and BaO.
Metallic character of elements depends upon the position in periodic table. Group numbers of given elements are as follows: (i) Beryllium (Be) – Group 2nd (ii) Ga (Gallium), Ge(Germanium), As (Arsenic) and Se (Sellenium) belongs to 13th, 14th, 15th and 16th groups respectively. (iii) Since, metallicRead more
Metallic character of elements depends upon the position in periodic table. Group numbers of given elements are as follows:
(i) Beryllium (Be) – Group 2nd
(ii) Ga (Gallium), Ge(Germanium), As (Arsenic) and Se (Sellenium) belongs to 13th, 14th, 15th and 16th groups respectively.
(iii) Since, metallic character decreases by moving left to right in a period, thus, Beryllium is the most metallic as it is at the left of 2nd period and Selenium is a non-metal as it is right most in the third period.
(iv) Thus, Beryllium is most metallic and selenium has least metallic character as it is a non-metal.
How does the electronic configuration of an atom relate to its position in the Modern Periodic Table?
Electronic configuration of an element gives the information of valence electrons and number of shell present in the element. We get the information of group number after knowing valence electrons. Number shell present in an element is equal to period number. Thus, by knowing electronic configuratioRead more
Electronic configuration of an element gives the information of valence electrons and number of shell present in the element.
See lessWe get the information of group number after knowing valence electrons.
Number shell present in an element is equal to period number.
Thus, by knowing electronic configuration we know the group number and period number of an element, which is the position of element in periodic table.
In the Modern Periodic Table, calcium (atomic number 20) is surrounded by elements with atomic numbers 12, 19, 21 and 38. Which of these have physical and chemical properties resembling calcium?
Elements with atomic numbers 12 and 38 have the similar chemical and physical properties of calcium.
Elements with atomic numbers 12 and 38 have the similar chemical and physical properties of calcium.
See lessUse Mendeleev’s Periodic Table to predict the formulae for the oxides of the following elements: K, C, AI, Si, Ba.
(i) The general formula for oxides of 1st, 2nd, third and 4th group are R₂O, RO, R₂O₃ and RO₂ respectively in the Mendeleev’s Periodic Table, where R denotes the element. (ii) Since, Potassium (K) belongs to 1st group, thus, formula of its oxide would be K₂O. (iii) Barium (Ba) belongs to 2nd group,Read more
(i) The general formula for oxides of 1st, 2nd, third and 4th group are R₂O, RO, R₂O₃ and RO₂ respectively in the Mendeleev’s Periodic Table, where R denotes the element.
See less(ii) Since, Potassium (K) belongs to 1st group, thus, formula of its oxide would be K₂O.
(iii) Barium (Ba) belongs to 2nd group, thus formula of its oxide would be BaO.
(iv) Aluminium (Al) belongs to the 3rd group, thus, formula of its oxide would be Al₂O₃.
(v) Carbon (C) and Silicon (Si) belong to the 4th group, thus, formula of its oxide would be CO₂ and SiO₂ respectively.
(vi) Thus, formula of oxides of the given elements would be K₂O, CO₂, Al₂O₃, SiO₂ and BaO.
By considering their position in the Periodic Table, which one of the following elements would you expect to have maximum metallic characteristic? Ga Ge As Se Be
Metallic character of elements depends upon the position in periodic table. Group numbers of given elements are as follows: (i) Beryllium (Be) – Group 2nd (ii) Ga (Gallium), Ge(Germanium), As (Arsenic) and Se (Sellenium) belongs to 13th, 14th, 15th and 16th groups respectively. (iii) Since, metallicRead more
Metallic character of elements depends upon the position in periodic table. Group numbers of given elements are as follows:
See less(i) Beryllium (Be) – Group 2nd
(ii) Ga (Gallium), Ge(Germanium), As (Arsenic) and Se (Sellenium) belongs to 13th, 14th, 15th and 16th groups respectively.
(iii) Since, metallic character decreases by moving left to right in a period, thus, Beryllium is the most metallic as it is at the left of 2nd period and Selenium is a non-metal as it is right most in the third period.
(iv) Thus, Beryllium is most metallic and selenium has least metallic character as it is a non-metal.
In the Modern Periodic Table, which are the metals among the first ten elements?
Lithium and Beryllium
Lithium and Beryllium
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