3. Which element has the ground state electronic configuration, 1s22s22p63s23p645' ? phosphorus

calcium

potassium

bromine

Explanation:simple1s22s22p63s23p1

short form[Ne] 3s23p1

orbital energy diagram

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.

i'm pretty sure its b i might be wrong though!