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CHEM 1151 ACTUAL EXAM PAPER 2026 QUESTIONS WITH ANSWERS GRADED A+

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CHEM 1151 ACTUAL EXAM PAPER 2026 QUESTIONS WITH ANSWERS GRADED A+

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CHEM 1151 ACTUAL EXAM PAPER 2026
QUESTIONS WITH ANSWERS GRADED A+

⫸ Isotope. Answer: an atom with the same number of protons and
different number of neutrons therefore a different mass numbeer


⫸ Group 1A. Answer: alkali metals


⫸ Group 2A. Answer: alkaline earth metals


⫸ Group 7A. Answer: Halogens


⫸ Group 8A. Answer: noble gases


⫸ What is located inside the nucleus of an atom?. Answer: Protons
and neutrons


⫸ Write the electron configuration for As. Answer:


⫸ Write the electron configuration for silver. Answer:


⫸ Write the electron configuration for an aluminum ion. Answer:


⫸ Write the electron configuration for a sodium ion. Answer:

, ⫸ Write the short hand configuration for iodine. Answer:


⫸ Write the short hand configuration for iron. Answer:


⫸ What is ionization energy and what is its trend?. Answer: The
energy needed to remove one electron from and atom. Increases from
bottom to top and left to right


⫸ What is atomic radius/size and what is its trend?. Answer: The
distance of valence electrons from the nucleus of an atom. Increases
from top to bottom


⫸ hydroxide. Answer: OH-


⫸ sulfate. Answer:


⫸ phospate. Answer:


⫸ acetate. Answer:


⫸ ammonium. Answer:


⫸ carbonate. Answer:

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