Astatine is a radioactive halogen that concentrates in the thyroid gland. Predict from its position in the periodic table the following properties of astatine:
a) physical state of astatine at 25ᵒC: solid/liquid/gas
b) formula of sodium astide: _____
(include phase)
c) color of sodium astatide: whide/black
d) formula of gaseous astatine: ______
(include phase)
e) color of solid astatine: white/black