Group the elements into pairs that would most likely exhibit similar chemical properties. it does not matter which pair of elements is pair 1, pair 2, or pair 3, so long as the correct elements are paired. na, o, ne, se, rb, kr

Pair 1 : Na & Rb

Pair 2 : O & Se

Pair 3 :  Ne & Kr

Explanation:

Pair  1 are Group 1 elements in the periodic table. They are electro-positive elements that exhibit metallic properties.

Pair 2 are Group 6 elements in the periodic table. They are electro-negative elements that exhibit non-metallic properties.

Pair 3 are Group 8 or Group 0 elements in the periodic table. They are mainly inert gases.

kuchisake

kuchisake-onna (口裂け女, "slit mouth woman ") is a malevolent figure appearing in japanese ghost stories, possibly dating back to the edo period. she takes the form of a masked woman who approaches people and asks them if they believe she is pretty.

explanation: