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“Hydrogen occupies a unique position in Modern Periodic Table”. Justify the statement.
Hydrogen occupies a unique position in the Modern Periodic Table because of the following reasons-
- Hydrogen and alkali metals have a similar outer electronic configuration as both have one electron in their outermost shell.
- Properties of Hydrogen are similar to properties of Halogens as electronic configurations of halogens and Hydrogen are the same.
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- (a) How were the positions of isotopes of an element decided in the modern periodic table?(b) How were the positions of cobalt and nickel resolved in the modern periodic table? (c) Where should hydrogen be placed in the modern periodic table? Give reason for your answer.
- (a) State modern periodic law.(b) How does the electronic configuration of the atom of an element relate to its position in the modern periodic table? (c) How could the modern periodic law remove various anomalies of Mendeleev’s periodic table? Explain with examples. (d) Is it possible to have an element having atomic number 1.5 placed between hydrogen and helium ? (e) Name the scientist who prepared modern periodic table.
- The basis for Modern Periodic Table is ______________.
- How does the electronic configuration of an atom relate to its position in the Modern Periodic Table?
- How could the modern periodic table remove various anomalies of Mendeleev’s Periodic Table?
- Compare and contrast the arrangement of elements in Mendeleev’s Periodic Table and the Modern Periodic Table.
- (a)In the modern Periodic Table, why does cobalt with higher atomic mass of 58.93 appear before nickel having lower atomic mass of 58.71?(b) Why could no fixed position be given to hydrogen in Mendeleev’s periodic table?
- State the Periodic Law on which the Modern Periodic Table is based.
- Which of the following statement (s) about the Modern Periodic Table are incorrectThe elements in the Modern Periodic Table are arranged based on their decreasing atomic numberThe elements in the Modern Periodic Table are arranged based on their increasing atomic massesIsotopes are placed in adjoining group (s) in the Periodic TableThe elements in the Modern Periodic Table are arranged based on their increasing atomic number(a) (i) only(b) (i), (ii) and (iii)(c) (i), (ii) and (iv) (d) (iv) only
- Total number of non-metal in the modern periodic table with their name.
- In the modern periodic table, which are the metals among the first ten elements?
- Oscillatory motion is periodic motion. Is this statement is true? Justify
- Find the position of box which occupies the given ball in Python
- How many horizontal rows are there in the modern periodic table and what are they called?
- An element X (atomic number 17) reacts with an element Y (atomic number 20) to form a compound.(a) Write the position of these elements in the modern periodic table.(b) Write the formula of the compound formed. Justify your answer in each case.
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