Asked by Random

Periodic law states that when the elements are arranged according to their atomic numbers, this allows elements with similar properties to appear at regular intervals. Predict the group of elements and their number of valence electrons that will combine in a 3:2 ratio to with calcium.

A) boron, aluminum, gallium; 3
B) sulfur, selenium, polonium; 6
C) oxygen, tellurium, bismuth; 2
D) nitrogen, phosphorus, arsenic; 5
Answered by Random
My answer was D.
Answered by Damon
I am inclined to agree.
eg Ca 2 , 8 , 8, 2 . loses those outer 2 to become Ca + +
P 2, 8 , 5 gains 3 to make outer shell whole 8 so P- - -

Ca+2 *3 = 6 , P-3 * 2 = -6 etc
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