Z forms chloride compounds with the formulae ZCl2 and ZC13. ZCl2 is a pale green solid and ZC13 is a brown solid.

Based on the given information, which are true about element Z?

I Element Z has high melting point.

II Element Z can form complex ion.

III Element Z has more than one oxidation number.

IV Element Z is a metalloid.

A I, III
B II, IV
C I, II, III
D I, II, III, IV

(B) II, IV.

hope this answer is helpful for u.

r just means there's a number of carbon in teh chain. for example rcooh means that after x number of carbon, the chain ends with cooh.

explanation:

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error