Answer the following: Valency — task. Science State Board, Class 8.

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Select the correct answer:

1. When an atom or a group of atoms lose or gain electrons, they are converted into _________?

anions
ions or radicals
elements
cations

2. Choose the correct molecular formula of stannic chloride?

\(SnCl_3\)
\(SnCl_4\)
\(StCl_4\)
\(StCl_3\)

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