Ascientist performs an experiment on an unknown element. she finds that the element forms and ionic bond with beryllium but not lithium. she concludes that the unknown element must belong in group 2 of the periodic table. state whether or not you think this result supports her conclusion, and why.

This results does not support her conclusion.

Explanation:

When a scientist performs an experiment and fins out that an element forms an ionic bond with beryllium but not with lithium.

Beryllium is an element of group 2 and it forms an ionic bond with non-metals.

Non-metals are the elements that belong from Group 15 to Group 17.

Therefore, the unknown element must belong to the groups from Group 15 to Group 17.

Hence, her conclusion the the unknown element belong to group 2 is wrong.

the dissociation of nickel hydroxide is follows:

the concentration of hydroxide ion is

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

thus, concentration of ni is 0.23 * 10^-^4 mol /l