Question

Potassium forms ions with a charge of +1 (K+). Iodine forms ions with a charge of -1. Selenium forms ions with a charge of -2 (Se2-).

Imagine that Potassium ions and Selenide ions combine to form Potassium Selenide. What numbers would be in the place of X and Y in:

KXSeY

(Use the number 1 even if it isn't strictly necessary)

X=__________________________ Y =__________________________

Answer 1

 The  number  that would   be  in the  place  of x  and Y   is

x=2

Y=1

Hence   the formula will   be K2Se

 Explanation

When  K+   which is positively  charged  combine with selenide (se2-)  which  is negatively charged they form an ionic  bond K2Se.

• 2  potassium ions K+)  loses   1  electron  each  while   selenide ion (Se2-)  accept  the  2  electron, Hence  the formula of  ionic bond  is K2Se

Answer 2

Answer:

x=2, y=1

Explanation:

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