A0.4657 g sample of a pure soluble bromide compound is dissolved in water, and all of the bromide ion is precipitated as agbr by the addition of an excess of silver nitrate. the mass of the resulting agbr is found to be 0.8878 g. what is the mass percentage of bromine in the original compound?

How will the emission of an alpha particle affect the atomic number of an atom

The atomic radius of sodium is 186 pm and of chlorine is 100 pm. the ionic radius for na+ is 102 pm and for cl– is 181 pm. in going from na to cl in period 3, why does the atomic radius decrease while the ionic radius increases? a. the inner electrons in the sodium cation shield its valence electrons more effectively than the inner electrons in the chloride anion do. b. the inner electrons shield the valence electrons more effectively in the chlorine atom than in the chloride anion. c. the outermost electrons in chloride experience a smaller effective nuclear charge than those in the sodium cation do. d. the outermost electrons in chloride experience a larger effective nuclear charge than those in the sodium cation do. e. monatomic ions are bigger than the atoms from which they are formed.

Ais a mountain created from eruptions of lava, ash, rocks, and hot gases.