In which of the following are the symbols and names for the ions given correctly? a. nh4+: ammonia; h+: hydride b. c2h3o2-: acetate; c2o4-: oxalite c. oh-: hydroxide; o2-: oxide d. po33-: phosphate; po43-: phosphite

The correct answer is Option C.

Explanation:

The ions given in the options are considered as polyatomic ions. This means that they are formed from the more than 2 atoms.

From the given options:

Option A:

ion is termed as ammonium ions.

ion is termed as hydrogen ion.

Thus, the names are not written correctly.

Option B:

ion is termed as acetate ion.

is termed as oxalate ion.

Thus, the names are not written correctly.

Option C:

ion is termed as hydroxide ion.

ion is termed as oxide ion.

Thus, the names are written correctly.

Option D:

ion is termed as phosphite ion.

ion is termed as phosphate ion.

Thus, the names are not written correctly.

Hence, the correct answer is Option C.

Ithe undersigned only for use your own email and delete any and copies and of the itself and to be there is a good timewhat does a decrease in temperature indicate about the molecules in a sample of liquid water? decreased chemical energy of the moleculesdecreased kinetic energy of the moleculesincreased chemical energy of the moleculesincreased kinetic energy of the moleculeshow does a sample of helium at 15 â°c compare to a sample of helium at 215 k? the helium at 15 â°c has a higher average kinetic energy than the sample at 215 k.the helium at 15 â°c has lower nuclear energy than the sample at 215 k.the helium at 15 â°c has slower-moving atoms than the sample at 215 k.the helium at 15 â°c has smaller atoms than the sample at 215 k.

Answer : option a) 84explanation :

considering the question as per the attachment

here we can see that the radon nuclide has 222 as the atomic mass number and 86 as the atomic number.

when it undergoes nuclear fission it gives polonium which has atomic mass number as 218 and atomic number will be 84 along with a helium nucleus which has 4 atomic mass number and 2 as its atomic number.

222 = 218 + 4 (atomic mass number)

86 = ? + 2; therefore ? = 86-2 = 84.

the atomic mass number of polonium will be 84.