Why do nonmetals tend to gain electrons to form negative ions? A. They have low electronegativities.
B. They gain electrons to balance the protons in their nuclei.
C. They gain the few electrons they need to form full octets.
D. They have fewer protons in their nuclei, so they attract electrons.
//APEX\\

they gain the few electrons they need to form full octets

they gain the few electrons they need to form full octets

explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.