Protons
Neutrons
Electrons
Protons and electrons
B. Neutrons
calcium sulphate
ammonium chloride
caustic soda
silver nitrate
chloro auric acid
auric chloride
gold nitrate
aurous chloride
chlorination
boiling
adding caustic soda
ozonisation
Radon
Astatine
Cesium
Ruthenium
a deliquescent substance
an efflorescent substance
a hygroscopic substance
a dehydrating substance
cutting off supply of oxygen
it™s being converted into carbon dioxide
its combination with haemoglobin of blood
its blocking of vocal chords
manganese dioxide
bauxite
animal charcoal
quicklime
Oxygen
Nitrogen
Hydrogen
Chlorine
Lead
Tin
Silver
Gold
hydrogen
nitrogen
oxygen
noble gases
number of neutrons in the nucleus
number of protons and neutrons in the nucleus
the valency of the element
number of protons in the nucleus
lead
zinc
mercury
chromium
annealing
hardening
quenching
tempering
nitrogen
helium
neon
argon
three
four
one
five
phenol
TNT
picric acid
iodoform
iodine in potassium iodide
iodine in alcohol
iodine in water
iodine in carbon disulphide
aldehydes
alkenes
amino acids
alkynes
as an analgesic
in the purification of water
as a fertilizer
as a disinfectant
acetic acid
chloroform
urea
methane
tin and copper
tin and lead
tin and zinc
tin, copper and zinc
magnesium chloride
sodium chloride
calcium sulphate
potassium chloride
CaO
Ca(OH)2
NaOH
Na2CO3
manganese
copper
potassium
plumbum
as a nucleus to condense water vapour resulting in rain
to maintain the average density of air
to minimise the inflammatory nature of oxygen
to protect the inhabitants of the earth from the effects of ultra violet rays.
brimstone and silica
limestone and clay
brimstone and clay
brimstone and limestone
Rutherford
Moseley
Niels Bohr
J.J. Thomson
brass
common salt
cane sugar
water
phosphorus pentaoxide
phosphorus trichloride
phosphorus trisulphide
phosphorus trioxide
urea
ammonium nitrate
ammonium sulphate
calcium cyanamide