Questions 13–16Questions 17–1912 . Solid → Gas(A) Proton
(B) Neutron
(C) Electron
(D) Isotope
(E) Ion
13 . Neutral charge; 1 amu14 . Positive charge15 . Negligible weight16 . Negative charge; pairs with opposite spin(A) K
(B) As
(C) Be
(D) Se
(E) Ir
17 . Metalloid