1)Obviously, actual chemical elements arent characterized by stars, notches, and
ID: 836605 • Letter: 1
Question
1)Obviously, actual chemical elements arent characterized by stars, notches, and holes. List five physical or chemical properties of the elements that have been used to arrange the periodic table the way it is.
2) Choose a group (column) from the periodic table and briefly describe how each of the five properties you listed above change as you move from top to bottom in the table.
3) Choose a period (row) from the periodic table and briefly describe how each of the five properties you listed above change as you move from left to right.
4) Which pair of elements would you expect to be most chemically similar: C and Si (which are in the same group) or C and N (which are in the same row)? Explain your answer .
Explanation / Answer
1) in periodic table elements are arrange by=
-atomic number
-elecrtonic configuration
-n0. of shell
-metals or non metals
-no. 0f electrons in outer orbital
2) lets take thegroup 1 elements
- atomic mass increases as u go down
-electronic config increases,new orbitas add as we go down
-as we go down ,each element increases by one shell
-elements become more metallic
-outer electronic config remains same
3) along a row
-atomic no. increases
-electronic config increases by one electron
-no. of shels is constant
-may be metals or no metals
-outer electrons increse by one
4) C and silicon are similar as theier outer electronic config is similar
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