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प्रश्न
Arrange the following elements in the order of their decreasing metallic character
Na, Si, Cl, Mg, Al
पर्याय
Cl > Si >Al > Mg >Na
Na >Mg >Al >Si > Cl
Na > Al > Mg > Cl > Si
Al > Na> Si > Ca> Mg
उत्तर
Na >Mg >Al >Si > Cl
Explanation -
In the modern periodic table, The metallic character of the elements increases down the group and the metallic character decreases along the period from left to right.
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संबंधित प्रश्न
Rewrite the following statement after correction, if necessary:
Groups have elements with consecutive atomic numbers.
The element which can from an acidic oxide should be the one whose atomic number is:
(a) 6
(b) 16
(c) 12
(d) 19
An element X from group 2 reacts with element Y from group 16 of the periodic table.
(a) What is the formula of the compound formed?
(b) What is the nature of bond in the compound formed?
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?
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.
The elements Li, Na and K, each having one valence electron, are in period 2, 3 and 4 respectively of modern periodic table.
(i) In which group of the periodic table should they be ?
(ii) Which one of them is least reactive ?
(iii) Which one of them has the largest atomic radius ? Give reason in justify your answer in each case.
How did the early chemists classify elements?
The elements A, B, and C belong to groups 1, 14, and 17 respectively of the Periodic Table. Which two elements will form ionic compounds?
Which one of the following does not increase while moving down the group of the periodic table?
The element with atomic number 26 will be found in group ______
