Question

name: using science skills id: a
element symbol protons neutrons electrons atomic number mass number
hydrogen h 1 1 1
helium he 2 2 4
carbon c 6 6 12
oxygen o 8 8
neon ne 10 10 20
aluminum al 13 27
zinc zn 30 30 65
figure 2 - 1

1. calculating based on figure 2 - 1, what is the mass number of carbon?
2. applying concepts based on figure 2 - 1, what is the atomic number of oxygen? oxygen atomic # =
3. applying concepts using figure 2 - 1, how many electrons does an atom of aluminum contain? aluminum electrons =
4. applying concepts according to figure 2 - 1, an atom of which element contains two neutrons? two neutrons are in the element
5. applying concepts based on figure 2 - 1, which element has a mass number of 16? the element that has a mass of 16 is
6. 5 pts. each: draw an atom of nitrogen: draw an atom of carbon:

Explanation:

Step1: Find carbon in the table

From the table, for carbon, the mass number is 12.

Step2: Find oxygen in the table

For oxygen, the atomic number is 8.

Step3: Find aluminum in the table

For aluminum, the number of electrons is 13 (since in a neutral atom, number of electrons = number of protons and for aluminum, number of protons is 13).

Step4: Check neutron - count in the table

Helium has 2 neutrons (2 protons and mass number 4, so neutrons = mass number - protons = 4 - 2 = 2).

Step5: Check mass - number in the table

No element with mass number 16 is in the given table.

Answer:

1. 12
2. 8
3. 13
4. Helium
5. None in the table
6. Drawing an atom of nitrogen: Nitrogen has atomic number 7 (7 protons, 7 electrons), and common isotope has 7 neutrons. Draw a nucleus with 7 protons and 7 neutrons, and 7 electrons in electron - shells (2 in first shell and 5 in second shell). Drawing an atom of carbon: Carbon has atomic number 6 (6 protons, 6 electrons), and common isotope has 6 neutrons. Draw a nucleus with 6 protons and 6 neutrons, and 6 electrons in electron - shells (2 in first shell and 4 in second shell).