Multiple choice

Consider that an electrovalent compound exists in the form XY. Which of the following can be the possible numbers of valence electrons in X and Y?

  1. X – 3, Y – 4

  2. X – 2, Y – 8

  3. X – 2, Y – 6

  4. X – 3, Y – 6
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The element X has 2 electrons in its valence shell. So, X is a metal and it will prefer to lose 2 electrons. The element Y has 6 electrons in its valence shell. So, Y is a non-metal and it will prefer to gain 2 electrons. Therefore, the compound between X and Y is ionic and will have the formula XY.                                                                                                            

Keep practicing — related questions