Suggest an explanation for the decreasing solubilities of the sulphates of the Group II elements as the proton (atomic) number of the cation increases. Use a Hess cycle to explain.

Md Ariful Islam

0 like 0 dislike
1 views
Share with your friends

1 Answers

Md Ariful Islam

Call

This is because there is an increase in the number of protons down the group

0 like 0 dislike
1 views
Talk Doctor Online in Bissoy App
0.5 mol of a cation required 144 750 C of electricity to be completely discharged. Calculate the charge on the cation.?

The quantity of electricity required to discharge 1 mole of univalent ion is approximately 96500 CIf 0.5 mol: 0.5*96500=48250 C;144750/48250= 3Answer: the charge is 3+

1 Answers 1 views
What is the general trend in the size of atomic radii as the atomic number increases within a group?

Down a group, the number of energy levels (n) increases, so there is a greater distance between the nucleus and the outermost orbital. This results in a larger atomic radius. Ionic radius is the distance from the...

1 Answers 1 views
The elements Q reacts with C and F to form an ionic solid and covalent liquid respectively .Suggest the formula for these products and compare A. their solubilities in water

Q+ +C- = QC2Q+ + F2- =Q2F

1 Answers 1 views
The proton number of elements J and K are 13 and 16 respectively. Suggest the most stable ions for J and K. State the type of stability of these two ions

Number of protons is equal to number of electronsThe electron configuration of K is 1s2 2s2 2p6 3s2 3p4The Valence shell (the 3s and 3p sublevel) contain 6...

1 Answers 1 views
The proton number of elements J and K are 13 and 16 respectively. Suggest the most stable ions for J and K. State the type of stability of these two ions.

Number of protons is equal to number of electronsThe electron configuration of K is 1s2 2s2 2p6 3s2 3p4The Valence shell (the 3s and 3p sublevel) contain 6 electrons but it needs eight to...

1 Answers 1 views
Describe and suggest an explanation for the trend in the thermal decomposition of the nitrates of the Group II elements magnesium to barium, writing equations and using diagrams where appropriate

Both carbonates and nitrates of Group 2 elements become more thermally stable down the group. The larger compounds further down require more heat than the lighter compounds in order to...

1 Answers 1 views
A blue Cu (II) cation salt solution was mixed with a green Ni (II) cation salt solution and an aqua colored solution resulted. Is this a chemical change or a physical change?

This is a physical change or a chemical change depending on the concrete example. For example, we can take Copper(II) sulfate - CuSO4 (gives a bright blue solution) and Nickel(II)...

1 Answers 1 views
why d-block elements elements are called as outer transition elements and f-block elements as inner transition elements?

The d-block elements are called transition metals and have valence electrons in d orbitals. The inner transition elements are those who have their last 3 shells incompletely filled. The f...

1 Answers 1 views
Indicate the solubility in water of each of the following groups of compounds: Salts of the alkali metals Hydroxides Chlorides Carbonate Sulphates Nitrate

Salts of the alkali metals:Hydroxides-solubleChlorides-solubleCarbonate-soluble(Lithium carbonate is limited soluble in water).Sulphates-solubleNitrate-soluble

1 Answers 1 views
Atomic and ionic radii of the elements of group 16 are smaller than those of the corresponding elements of group 15 and increases down the group. Why?

The atomic radius of group-16 elements or oxygen family are smaller than that of group-15 elements. This is due to increase in the effective nuclear charge from group-15 elements which...

1 Answers 1 views
X