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

x=2, y=1

Step-by-step explanation:

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Answer 2

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