The grid below is a Periodic Table. The letters used are not the actual chemical symbols of the elements. Study the table and answer the...

The grid below is a Periodic Table. The letters used are not the actual chemical symbols of the elements. Study the table and answer the questions that follow.


(a) What name is given to the elements that occupy region X?
(b) Write an equation to show how element Y forms an ion.
(c) Compare the atomic and ionic radius of T.
(d) Explain why the ionization energy of V is lower than that of D.
(e) Name the chemical family to which E belongs.
(f) An element A is in period 3 and it loses three electrons to form an ion. Write the electronic configuration of an atom of A.

(g) Elements D and U combine to form a compound with a giant structure.
(i) Name the giant structure.
(ii) State two characteristics of the structure.
(h) Write the formula of the compound formed when T and Y react.
(i) State and explain the change in electrical conductivity from D to T.

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(a) Transition elements// Transmission metals

(b) Y + e ? Y^-

(c) - The atomic radius is larger than the ionic radius because the outermost energy level is destroyed as the atom forms the ion // The atomic radius is larger because atom has more energy levels than ion.

(d) The outermost electron in V is loosely held because of the large atom but in D it is strongly held because of smaller atom // small size.

(e) Alkaline Earth metals.

(f) 2: 8 : 3

(g) i) Giant Ionic structure
ii) - It is soluble in water

- It has high melting point
(h) TY2
(i) Increases because of increase in number of free mobile electrons on the outermost energy level.

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maurice.mutuku answered the question on September 9, 2019 at 05:26

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