Answer:
Name: lithium
Atomic no. 3
Valence electron: 1
Electronegativity
: 0.98
Classification: alkali metal
Name: Calcium
Atomic Number: 20
Valence electron:2
Electronegativity:1
Classification: alkaline earth metal
Name: Mercury
Atomic no.80
Valence electron: 1,2
Electronegativity: 2
Classification: transition metal
Name:Sulfur
Atomic Number:16
Valence electron:6
Electronegativity
:2.58
Classification: non metal
Name: Fluorine
Atomic Number:9
Valence electron:7
Electronegativity:3.98
Classification:halogen
Explanation:
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