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प्रश्न
What property forms the basis of identification?
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उत्तर
Electronegativity
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संबंधित प्रश्न
An atom has the electron structure of 2, 7.
(a) What is the atomic number of this atom?
(b) To which of the following would it be chemically similar?
7N, 15P, 17Cl, 18Ar
(c) Why would you expect it to be similar?
A non-metal X which is the largest constituent of air combines with hydrogen when heated in the presence of iron as catalyst to form a gas Y. When gas Y is treated with sulphuric acid, it forms a compound Z which is used as a chemical fertiliser.
(a) What are X, Y and Z?
(b) To which group of periodic table does X belong?
(c) Name the periodic table in which X is placed.
(d) Which element is placed just before X in the period?
(e) Which element is placed just after X in the period?
What was the basis of the earliest attempts made for classification and grouping of elements?
Answer the following question.
Write the name, symbol, and electronic configuration of an element X whose atomic number is 11.
______ group contains the member of the halogen family.
Identify the bond between H and F in the HF molecules.
Which one of the following statements is not correct about the trends in the properties of the elements of a period on going from left to right?
Which of the following property will be common in group 1 elements?
Complete the following triads by inserting the missing elements.
Li, ______, K
Justify. Element 'X' forms an oxide with the formula X2O3 which is a solid with a high melting point. ‘X’ would most likely be placed in the group of the Periodic Table as Al.
