Question

periodic table worksheet
part 1: subatomic particles
complete the following chart (1 point each)

particle	charge	mass	location in atom
neutron
electron

part 2: periodic table information
complete the following chart (1 point each)

element	symbol	atomic #	mass #	# of protons	# of neutrons	# of electrons	group #	period #
		20	10
mercury					120
bromine		80				35
		11			12
silver					61
	6	14

Explanation:

Step1: Recall sub - atomic particle properties

Proton: Charge = + 1, Mass = 1 amu, Location = nucleus
Neutron: Charge = 0, Mass = 1 amu, Location = nucleus
Electron: Charge=- 1, Mass $\approx$ 0 amu, Location = outside nucleus

Step2: Recall periodic table facts for elements

• Magnesium: Symbol = Mg, Atomic number (number of protons) = 12, Mass number = 24 (assuming common isotope, since number of neutrons = 12), Number of electrons = 12 (neutral atom), Group = 2, Period = 3
• For the element with atomic number 10: Element = Neon, Symbol = Ne, Mass number = 20, Number of protons = 10, Number of neutrons = 10, Number of electrons = 10, Group = 18, Period = 2
• Mercury: Symbol = Hg, Atomic number = 80, Mass number (assuming common isotope) $\approx$ 200, Number of protons = 80, Number of neutrons = 120, Number of electrons = 80, Group = 12, Period = 6
• Bromine: Symbol = Br, Atomic number = 35, Mass number (assuming common isotope) $\approx$ 80, Number of protons = 35, Number of neutrons = 45, Number of electrons = 35, Group = 17, Period = 4
• For the element with atomic number 11: Element = Sodium, Symbol = Na, Mass number = 23 (since number of neutrons = 12), Number of protons = 11, Number of electrons = 11, Group = 1, Period = 3
• Silver: Symbol = Ag, Atomic number = 47, Mass number (assuming common isotope) $\approx$ 108, Number of protons = 47, Number of neutrons = 61, Number of electrons = 47, Group = 11, Period = 5
• For the element with atomic number 6: Element = Carbon, Symbol = C, Mass number = 14, Number of protons = 6, Number of neutrons = 8, Number of electrons = 6, Group = 14, Period = 2

Answer:

Particle	Charge	Mass	Location
Neutron	0	1 amu	Nucleus
Electron	- 1	$\approx$ 0 amu	Outside nucleus

Element	Symbol	Atomic #	Mass #	# of Protons	# of Neutrons	# of Electrons	Group #	Period #
Neon	Ne	10	20	10	10	10	18	2
Mercury	Hg	80	200	80	120	80	12	6
Bromine	Br	35	80	35	45	35	17	4
Sodium	Na	11	23	11	12	11	1	3
Silver	Ag	47	108	47	61	47	11	5
Carbon	C	6	14	6	8	6	14	2