All who are normally stupefied by poverty would become more electronegative. Elements become more metallic e.g. Group 14. 120 Download free eBooks at bookboon.com Fundamentals of Chemistry Chemical Equations Subatomic Structure Relative Atomic Mass 22 2.1 Chemical equations 22 2.2 Atomic Structure 24 2.3 Fundamental subatomic particles Particle Relative Mass Relative charge Proton (p) 1 + 1 (including 0). Type of energy sub-level Number of Electron Pairs Shape Bond Angle Example 2 Linear 180° BeCI 2 3 Trigonal planar 120° 4 Tetrahedral 109.5° ch 4 5 Trigonal.