InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
equationnumber is considered to be a more appropriate parameter than atomictication of elements in a periodic table. Why?the metallic character of elements vary on moving from () left to right in a period,How does(a top to bottom in a group?Give nasons for your answersOr |
|
Answer» The properties of elements depend upon valence electrons in the atom which in turn depends on the total number of electrons, i.e., atomic number. Therefore, atomic number is a more appropriate parameter than atomic mass for classification of elements. (i) Metallic character decreases as you move across a period in the periodic table from left to right. This occurs as atoms more readily accept electrons to fill a valence shell than lose them to remove the unfilled shell. (ii) Metallic character increases down a group due to increase in atomic size. Thus, the outermost electrons are farther away from the nucleus and therefore can be lost easily. Hence, the electropositive character or metallic character increases. |
|