How do the interactions that are broken in water when it is boiled compare with those broken when water is electrolyzed? boiling water breaks intermolecular attractions and electrolysis breaks covalent bonds. boiling water breaks covalent bonds and electrolysis breaks intermolecular attractions. boiling water and electrolysis of water break covalent bonds. boiling water and electrolysis of water break intermolecular forces.

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.

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

Apiece of copper has a temperature of 75.6 0c. when the metal is placed in 100.0 grams of water at 19.1 0c, the temperature rises by 5.5 0c. what is the mass of the metal?