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प्रश्न
The atomic number of an element 'X' is 11.
- Write the electronic configuration of X and find its valency.
- Write the formula and nature of its oxide.
उत्तर
(i) The electronic configuration of element X is : 2, 8, 1
Valency = 1
(ii) The formula of the oxide 'X' is X2O. It is because the valency of element 'X' is 1 and valency of oxygen is 2.
X2O is a basic oxide. Since, element X contains one electron in its valence shell, so it is a metal and metal forms basic oxides.
संबंधित प्रश्न
The element X forms a compound X2Y. Suggest an element that Y might be and give reasons for your choice.
An element A has an atomic number of 6. Another element B has 17 electrons in its one neutral atom.
(a) In which groups of the periodic table would you expect to find these elements?
(b) what type of bond is formed between A and B?
(c) Suggest a formula of the compound formed between A and B.
How did the early chemists classify elements?
Why was this basis of classification discarded for future classification of elements?
The number of periods and groups in the periodic table are ______
An element X from group 2 of the Periodic Table reacts with Y from group 17 to form a compound. Give the formula of the compound.
Which of the following is a transition element?
Which of the following elements does not lose an electron easily?
Relate the names of the following scientists with the statements given below.
Arranged elements in a group of seven with increasing atomic masses and eighth elements with similar properties kept below the first like eight note in an act of music.
Element 'X' forms an oxide with the formula X2O3 which is a solid with high melting point. ‘X’ would most likely be placed in the group of the Periodic Table as:
