Yes, it is - it has a yield point and can strain quite a bit 20% or so before failure
I'm unfamiliar with this element "soduim", but I'm willing to bet it's temperature at room temperature will be... Oh, I dunno... room temperature.
solid
24c (75.2f)
gas at room temperature
Ozone is a gas.
solid
Mercury (Hg) is a liquid at room temperature.
water, mercury, bromine (i think)
Color less
yes mercury is ductile but not at room temperatures.
it is the resistance of material to impact(sudden) loading...or..it is the impact energy absorbed per unit area.
at room temp.