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yulyashka [42]
3 years ago
6

How to draw an.electron dot diagram. 1 write the chemical aymbo of the atom.2. Determine the number of valence electron the atom

has.3. Place first two dot on the right side of the symbol.4. Place the remaining dots around the symbol( on the bottom.the left side,and on top) 5. There should not be any more than two dots on either side .top.or bottom, and no electron should be left over. Please help its my first time doing these .

Chemistry
1 answer:
almond37 [142]3 years ago
8 0
Basically, an electron dot diagram is just a diagram showing the number of valence electrons a certain atom has (valence electrons are electrons in the outer-most electron level of an atom). The 5 steps they give you just tell you the order of where to put each dot.  The picture I attached gives a better representation.

The number around the symbol shows the order of where you would put the dot.  The 1 and the 2 on the top show that the first two dots go there, and the 3, 4, and 5 go around the rest of the sides.  When it gets to 6, 7, and 8, the numbers go back around to fill  in each side twice.

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A perfect cube of aluminum metal was found to weigh 20.00 g. The density of aluminum is 2.7 g/ml. What are the dimensions of the
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Answer:

             Height  = 1.9493 cm

             Width =  1.9493 cm

             Depth  =  1.9493 cm

Solution:

Data Given:

                  Mass  =  20 g

                  Density  =  2.7 g/mL

Step 1: Calculate the Volume,

As,

                                        Density  =  Mass ÷ Volume

Or,

                                        Volume  =  Mass ÷ Density

Putting values,

                                        Volume  =  20 g ÷ 2.7 g/mL

                                        Volume  =  7.407 mL or 7.407 cm³

Step 2: Calculate Dimensions of the Cube:

As we know,

                                        Volume  =  length × width × depth

So, we will take the cube root of 7.407 cm³ which is 1.9493 cm.

Hence,

                                        Volume  =  1.9493 cm × 1.9493 cm × 1.9493 cm

                                        Volume  =  7.407 cm³

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