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प्रश्न
Identify the bond between H and F in the HF molecules.
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उत्तर
The bond between Hydrogen (H) and Fluorine (F) in an HF molecule is polar covalent.
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संबंधित प्रश्न
Rewrite the following statement after correction, if necessary:
Periods are the horizontal rows of elements.
As element X has mass number 40 and contains 21 neutrons in its atom. To which group of the periodic table does it belong?
An element X from group 2 of the periodic table reacts with an element Y from group 17 to form a compound.
(a) What is the nature of the compound formed?
(b) State whether the compound formed will conduct electricity or not.
(c) Give the formula of the compound formed.
(d) What is the valency of element X?
(e) How many electrons are there in the outermost shell of an atom of element Y?
The following diagram shows a part of the periodic table containing first three periods in which five elements have been represented by the letters a, b, c, d and e (which are not their chemical symbols):
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1 18 a 2 13 14 15 16 17 b c d e
(i) Select the letter which represents an alkali metal.
(ii) Select the letter which represents a nobles gas.
(iii) Select the letter which represents a halogen.
(iv) What type of bond is formed between a and e?
(v) What type of bond is formed between d and e?
Write the names and symbols of two very reactive metals belonging to group 1 of the periodic table. Explain by drawing electronic structure, how either one of the two metals reacts with a halogen. With which name is the bond formed between these elements known and what is the class of the compound so formed known? State any four physical properties of such compounds.
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.
An element with the atomic number 40 is placed in the period.
Arrange the following elements in the order of their decreasing metallic character
Na, Si, Cl, Mg, Al
Which of the following metals have low melting and boiling point?
