If you mean the elements in their normal forms, F and Cl are gases, Br is a liquid, I is a solid.
If you mean their ligand hard/soft qualities as halide ions:-
the lighter ones are hard, Br- and I- soft
Selenium is a non-metal element, so it does not have a distinct color in its pure form. However, when combined with other elements in compounds, selenium can exhibit colors ranging from red to black, depending on the specific compound.
Selenium is generally more brittle than sodium. While sodium is a soft, malleable metal that can be easily cut with a knife, selenium, a nonmetal, tends to be more rigid and can break or fracture under stress. The brittleness of selenium makes it more prone to cracking compared to the ductile nature of sodium.
Plastic can be soft or hard, depending on its composition and processing. Some plastics are engineered to be flexible and soft, while others are rigid and hard.
Its hard
It is a limestone, hard.
Hard
it is hard and sometimes soft
hard
soft you can bend and hard you can not
Selenium is a non-metal element, so it does not have a distinct color in its pure form. However, when combined with other elements in compounds, selenium can exhibit colors ranging from red to black, depending on the specific compound.
"Treated wood can be soft or hard." But, generally what is bought from a lumberyard is soft.
soft
Soft
is larch wood soft or hard wood
one is soft and the other is hard
Solid is hard. It is nt soft.
Cheese. There are four main types of cheese: soft, semi-soft, semi-hard, and hard.