Each element in 3 adjectives, MBTI, D/S and alignment. I will triangulate you a personality. I may also reuse adjectives.
Potassium: Hyperactive, violent, outgoing. ESFP. Dominant. Chaotic Good.
Calcium: Unshakeable, laconic, unbound. ISTP. Dominant. True Neutral.
Scandium: Cloistered, soft-spoken, studious. INTJ. Submissive. Lawful Neutral.
Titanium: Sardonic, confident, breezy. ENTP. Dominant. True Neutral.
Vanadium: Unrestrained, fiery, bad-tempered. ESFP. Dominant. Chaotic Good.
Chromium: Prudent, chivalrous, dutiful. ISTJ. Dominant. Lawful Good.
Cobalt: Haughty, quiet, unperturbed. INTP. Submissive. True Neutral.
Selenium: Calculating, adroit, shifty. INTP. Dominant. Lawful Evil.
Bromine: Loyal, strict, motherly. ISFJ. Dominant. Lawful Good.
Rubidum: Efficient, severe, ruthless. ISTJ. Dominant. Lawful Neutral.
Niobium: Curious, eager, demure. ENTP. Submissive. Neutral Good.
Molybdenum: Vivacious, cheerful, intense. ENFP. Submissive. Neutral Good.
Ruthenium: Sturdy, daring, tomboyish. ESTP. Dominant. True Neutral.
Silver: Secretive, condescending, evilll (secretly). INTP. Submissive. Lawful Evil.
Tellurium: Bloodlusting, self-destructive, masochistic. INFJ. Submissive. Chaotic Evil.
Xenon: Xenophobic (yes really), paranoid, responsible. ISTJ. Submissive. Lawful Neutral.
Hafnium: Compassionate, gentle, docile. INFP. Submissive. Lawful Good.
Thallium: Objective, stern, unrevealing. ISFJ. Submissive. Lawful Neutral.
Polonium: Intimidating, stiff, moody. ISTJ. Dominant. Lawful Neutral.
Radon: Jovial, indulgent, charismatic. ENFP. Dominant. Neutral Good. (though he IS maker of the law...)
Radium: Workaholic, obsessively neat, caring. INFJ. Submissive. Lawful Good.
Rutherfordium: Casual, creative, undemanding. Submissive. Neutral Good.