Phyiscal science test monday

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The following is a periodic table below

All the letters are in squares

The S = an empty square

13 Colums in total

Questions:

1. Which pair of eleemtns has the same number of valence electrons? clueless

2. What pair of elements is in the same period? D and R

3. Which pair of elemetns is in the same family? K and F

4. Which element has the smallest atomic number??

5. IF the atomic number of element D is 20 then wha tis the atomic number of R? HELP CLUELESS

K S

S S S S J S S

F S S S S S S

S S S D S S R S S S S S S

  • Phyiscal science test monday -

    1. ARe K,F in the same family? Doesn't that make them the same valence?

    4. K has the smallest atomic number. Look at a real periodic table.

    5. Add three.

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