Question

3 fill in the blank 2 points name the following compounds from question 11: e. p₂o₇ type your answer... k. ti₂so₄ type your answer... 4 fill in the blank 2 points write the formula for the following compounds from question 12 if a subscript is required, just type the number next to the letter it will be correct example: d. nitrous acid type your answer.

Explanation:

Step1: Name $P_2O_7$

It is a covalent compound. Prefixes are used for non - metal compounds. 'di -' for 2 and 'hepta -' for 7. So it is diphosphorus heptoxide.

Step2: Name $Tl_2SO_4$

$Tl$ is thallium and $SO_4^{2 - }$ is sulfate. The subscript 2 on $Tl$ indicates a + 1 oxidation state for thallium. So it is thallium(I) sulfate.

Step3: Write formula for nitrous acid

Nitrous acid contains the nitrite ion ($NO_2^{-}$) and a hydrogen ion ($H^{+}$). The formula is $HNO_2$.

Answer:

e. Diphosphorus heptoxide
k. Thallium(I) sulfate
d. $HNO_2$