Balance this half-reaction: mno4- → mno2 (basic solution)

Balance atoms: (for everything except oxygen and hydrogen):

MnO4- → MnO2 (atoms are balanced)

Balance oxygen:

MnO4- → MnO2 + 2H2O

Balance hydrogen:

4H+ + MnO4- → MnO2 + 2H2O

Make adjustments for basic solution.

Add hydroxide ions to balance hydrogen:

4OH- + 4H+ + MnO4- → MnO2 + 2H2O + 4OH-

Remove hydrogen by forming water molecules and removing them:

4H2O + MnO4- → MnO2 + 2H2O + 4OH-

Cancel out any water molecules that are on both sides of the equation:

2H2O + MnO4- → MnO2 + 4OH-

Balance charge:

2H2O + MnO4- +3e- → MnO2 + 4OH-

mention the spill to the teacher clean the area and throw the broken pieces away

explanation:

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.