Valency: Choose the best answer — task. Science State Board, Class 8.

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Select the correct answer:

1. __________ is electronic configuration ?

Electrons arrangement in the orbits
Protons arrangement in the orbits
Neutrons arrangement in the orbits
Atom arrangement in the orbits

2. __________ is the chemical name of \( NaNO_3 \)?

Sodium nitrate
Sodium chloride
Sodium Oxide
Sodium hydroxide

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