The lab question is “based on a substance’s properties, how can you determine whether its bonds are ionic or covalent? ” fill in the box to answer this question with a hypothesis. hypothesis: if a substance contains ionic bonds, then its properties would include . .

If the substance has high melting/boiling point, if it requires high temperature to dissociate into simpler particles, if it's structure is hard and if it conducts heat and electricity quite frequently, then it would be "Ionic compound" otherwise, it will be covalent compound. (compound with covalent bonds).

Substance with ionic bonds, would include... (mentioned in first sentence)

Hope this helps!

The bonds between ionic molecules are very strong. The ionic molecules are crystalline solid, have high boiling point, and show electric conductivity in the solution.

Ionic Bond:

This bond is formed between two ions where one is positive and another is negative. Positively charged elements give electrons to negatively charged elements to complete octet.

Example:

Properties of Ionic Compound:

Usually found as solid crystals.The boiling and melting point is very high.They conduct electricity in water solutions.

Properties of covalent Compound:

Found in all 3 forms in the room temperature.Usually they have relatively low boiling and melting point.They do not conduct electricity.

Hence, If a substance contains ionic bonds, then its properties would include solid crystalline state, high melting point and conduct electricity in the solution.

To know more about ionic compound, refer to the page:

link

It was ernest rutherford

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.