Question

1 fill in the chart dont forget: ape man a = p = e m - a = n

Explanation:

Step1: Recall atomic symbol rules

Atomic symbols are either one - letter (capital) or two - letter (first capital, second lowercase). Helium is He, Magnesium is Mg, Boron is B, Fluorine is F, Nickel is Ni, Lithium is Li.

Step2: Use \(A = P=E\) (atomic number \(A\) = number of protons \(P\) = number of electrons \(E\)) and \(M - A=N\) (mass number \(M\), neutrons \(N\))

• For Helium: \(A = 2\), \(M = 4\), \(N=4 - 2=2\)
• For Magnesium: \(A = 12\), \(M = 24\), \(N = 24-12 = 12\)
• For Boron: \(A = 5\), \(M = 11\), \(N=11 - 5=6\)
• For Fluorine: \(A = 9\), \(M = 19\) (assuming a common isotope, if mass number is 18, \(N=18 - 9 = 9\))
• For Nickel: \(A = 28\), if \(M = 58\), \(N=58 - 28=30\)
• For Lithium: \(A = 3\), \(M = 6\), \(N=6 - 3=3\)

Step3: Determine group and period

• Helium is in group 18 (noble gases), period 1
• Magnesium is in group 2 (alkaline earth metals), period 3
• Boron is in group 13, period 2
• Fluorine is in group 17 (halogens), period 2
• Nickel is in group 10 (transition metals), period 4
• Lithium is in group 1 (alkali metals), period 2

Step4: Classify as metal/non - metal/metalloid

• Helium: non - metal
• Magnesium: metal
• Boron: metalloid
• Fluorine: non - metal
• Nickel: metal
• Lithium: metal

Answer:

Element	Symbol	Atomic Number	Mass Number	Protons	Neutrons	Electrons	Columns (Groups, Families)	Rows (Periods)	Metal, Nonmetal or Metalloid
Magnesium	Mg	12	24	12	12	12	2	3	Metal
Boron	B	5	11	5	6	5	13	2	Metalloid
Fluorine	F	9	19	9	10	9	17	2	Non - metal
Nickel	Ni	28	58	28	30	28	10	4	Metal
Lithium	Li	3	6	3	3	3	1	2	Metal