This formula is Al(NO3)3.
The correct name for the compound CoCl3 is cobalt III chloride.
If the formula was intended to be PCl5, the compound is phosphorus pentachloride.
The Correct Chemical Name is: xenon tetrafluoride
MgCl2
dialuminium trisulphide?
That would depend on what that compound is/is made from.
The correct name for the compound CoCl3 is cobalt III chloride.
It's sodium sulfide.
Correct.
the correct formula unit for the ionic compound barium oxide is BaO.
The correct name is mercury(II) sulfide.
The smallest numbers of ions of the proper kind that provide a correct elemental composition for the compound with electrical charges balanced. For example, magnesium cations have a charge of +2 and chloride anions have a charge of -1, so that two chloride anions and one magnesium cation are required to provide electrical neutrality, resulting in a formula of MgCl2.
Na + have a charge of +1 sulphates SO4 2- have a charge of -2 Somehow the formula must cancel out and render a neutral molecule Thus the formula is '''Na2SO4 '''the compound is called sodium sulphate
none of these A+
either way is correct
No, the correct grammar is "Does she know." The auxiliary verb "does" is followed by the base form of the main verb "know" in simple present tense questions.
A+ oxygen difluoride