1. What makes carbon such a unique element? A Carbon forms covalent bonds rather than ionic bonds
B Carbon has two stable isotopes, carbon-12 and carbon-13
C. Elemental carbon comes in two forms, diamond and graphite
D To a greater extent than any other element carbon can bond itself to form straight
chains, branched chains and rings​

Carbon plays a unique role among the chemical elements. ... Due to its four valence electrons, carbon is the smallest element that is able to make covalent bonds to four different atoms in its neutral form.

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.

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