Part 1 dd See Periodic T This picture is a visual representation of helium. Write the chemical formula for helium. Helium Part 2 Helium is classified as a(n) element. compound.
Solution
Ans. # Part A: Shown here is a total of 7 particles (blue balls; protons + neutrons) in the nucleus of the atom.
# Atomic number (= number of protons) of He is 2.
Now,
No. of neutrons = Total number of (protons + neutrons) – No. of protons
= 7 – 2
= 5
# Chemical formula = 7 He 2
# Part B: Helium is classified as an element .
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Part 1 dd See Periodic T This picture is a visual representation of he.docx
1. Part 1 dd See Periodic T This picture is a visual representation of helium. Write the chemical
formula for helium. Helium Part 2 Helium is classified as a(n) element. compound.
Solution
Ans. # Part A: Shown here is a total of 7 particles (blue balls; protons + neutrons) in the nucleus
of the atom.
# Atomic number (= number of protons) of He is 2.
Now,
No. of neutrons = Total number of (protons + neutrons) – No. of protons
= 7 – 2
= 5
# Chemical formula = 7 He 2
# Part B: Helium is classified as an element .
