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The element sodium is given the chemical symbol Na and can be found in the Periodic Table on page 79 of the Formulae and Tables booklet - Junior Cycle Science - Question a - 2015
Question a
The element sodium is given the chemical symbol Na and can be found in the Periodic Table on page 79 of the Formulae and Tables booklet. (i) Sodium is in Group 1 of... show full transcript
Worked Solution & Example Answer:The element sodium is given the chemical symbol Na and can be found in the Periodic Table on page 79 of the Formulae and Tables booklet - Junior Cycle Science - Question a - 2015
Step 1
Step 2
Draw a model of the structure of an atom of sodium-23.
Answer
In the atom of sodium-23:
- It has a total of 11 protons and 12 neutrons.
- The first shell contains 2 electrons.
- The second shell contains 8 electrons.
- The third shell contains 1 electron.
Therefore, the structure can be depicted as follows:
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• •
• • • • • • • •
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(Note: A detailed diagram should be presented showing the protons, neutrons, and electron arrangement as described.)
Step 3
Explain why sodium and potassium have many similar chemical properties.
Answer
Sodium and potassium have many similar chemical properties because they both belong to Group 1 of the Periodic Table, which means they have the same number of electrons in their outermost shell (1 electron). This similar electronic configuration leads to comparable reactivity and bonding behaviors.
Step 4