Na[B₄O₄(OH)₅].10H₂O

Na₂[B₅O₄(OH)₄].10H₂O

Na[B₄O(OH)₅].8H₂O

Na₂[B₄O₅(OH)₄].8H₂O

It has better shine than Ag

It does not scratch

Coating is much more smoother

It does not tarnish in air

As a styptic to stop bleeding

In making enamel and pottery glazes

As a flux in soldering

In making optical glasses

It contains weak acid and its salt with strong base

It contains tribasic acid and strong base

It contains a number of neutral water molecules

None of these

It is an active form of lead

It decomposes into Pb and CO₂

Its molecular formula is Pb₂O₃

It decomposes into PbO and O₂