Question

HELP
(a) Elements X, Y and Z have atomic numbers 6,9 and
12 respectively. Which one :
(i) forms an anion, (ii) forms a cation,
(b) State the type of bond between Y and Z and give its
molecular formula.​

Answer 1

Answer:

1. X shares the electrons with other therefore it forms covalent bonds and no ionic bond.
2. Y forms Anion as it's outer orbit contains 7 electrons.(gains 1 electron)
3. Z forms the Cation as it's outer orbit contains only 2 electrons.( donates 2 electrons).

Y and Z will form The Ionic bond as the contain ions Y(non-metal) and Z(metal)

Atomic number of Y= 9 (given)

According to periodic table the this element is Flourine(F) which is highly reactive and has tendency to gain electron.

Atomic number of Z= 12 (given)

According To the periodic table this element is magnesium(Mg) and it is a metal and donates 2 electrons to flourine

THEREFORE, Molecular formula will be MgF2 or YZ2

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