Question

directions: use the periodic table to fill in the below chart. name 6.4 c periodic table of elements element symbol atomic number # of protons # of electrons atomic mass rounded atomic mass (show work) # of neutrons period

Explanation:

Step1: Find element information

Use periodic - table to get details for each element.

Step2: Determine symbol

Look up the symbol for each element in the table. For example, Hydrogen is H, Iron is Fe, etc.

Step3: Identify atomic number

Atomic number = number of protons. Find it from periodic - table.

Step4: Determine number of electrons

In a neutral atom, number of electrons = number of protons.

Step5: Find atomic mass

Get the atomic mass value from the periodic - table.

Step6: Round atomic mass

Round the atomic mass to the nearest whole number.

Step7: Calculate number of neutrons

Number of neutrons=rounded atomic mass - atomic number.

Step8: Find period

Locate the period number of the element in the periodic - table.

Answer:

Element	Symbol	Atomic Number	# of Protons	# of Electrons	Atomic Mass	Rounded Atomic Mass	# of Neutrons (show work)	Period
Iron	Fe	26	26	26	55.845	56	56 - 26 = 30	4
Silicon	Si	14	14	14	28.085	28	28 - 14 = 14	3
Nitrogen	N	7	7	7	14.007	14	14 - 7 = 7	2
Potassium	K	19	19	19	39.098	39	39 - 19 = 20	4
Sodium	Na	11	11	11	22.990	23	23 - 11 = 12	3
Calcium	Ca	20	20	20	40.078	40	40 - 20 = 20	4
Aluminum	Al	13	13	13	26.982	27	27 - 13 = 14	3
Carbon	C	6	6	6	12.011	12	12 - 6 = 6	2
Helium	He	2	2	2	4.003	4	4 - 2 = 2	1
Oxygen	O	8	8	8	15.999	16	16 - 8 = 8	2