Question

State the symbol, atomic number, mass number, number of proton, electron and neutron of these elements: Calcium, Sodium, Chlorine and Aluminum.​

Answer 1

Answer:1. Calcium (Ca):

- Symbol: Ca

- Atomic Number: 20

- Mass Number: 40.08 (rounded to two decimal places)

- Number of Protons: 20

- Number of Electrons: 20 (since the number of protons and electrons is the same in a neutral atom)

- Number of Neutrons: 20 (mass number - atomic number)

2. Sodium (Na):

- Symbol: Na

- Atomic Number: 11

- Mass Number: 22.99 (rounded to two decimal places)

- Number of Protons: 11

- Number of Electrons: 11

- Number of Neutrons: 12 (mass number - atomic number)

3. Chlorine (Cl):

- Symbol: Cl

- Atomic Number: 17

- Mass Number: 35.45 (rounded to two decimal places)

- Number of Protons: 17

- Number of Electrons: 17

- Number of Neutrons: 18 (mass number - atomic number)

4. Aluminum (Al):

- Symbol: Al

- Atomic Number: 13

- Mass Number: 26.98 (rounded to two decimal places)

- Number of Protons: 13

- Number of Electrons: 13

- Number of Neutrons: 14 (mass number - atomic number)

Step-by-step explanation: