Sphere
Early models of atoms used a solid, indivisible spherical particle called a "primordial atom" or "atomos." These models, proposed by ancient Greek philosophers like Democritus and Leucippus, suggested that all matter is composed of these fundamental, unchangeable building blocks. However, later advancements in atomic theory, particularly with the work of John Dalton and J.J. Thomson, revealed that atoms are actually composed of smaller subatomic particles with distinct properties.
Sphere
A solid figure.
You have to count the lines on a solid figure
no a basketball is not a solid figure.
Yes, Carbon atoms are solid :)
No- a triangle is a plane figure, not a solid.
yes a triangle is a solid figure
Yes and no. Yes = plane figure No = solid figure.
Dalton's model of an atom, proposed in the early 19th century, viewed the atom as a solid, indivisible sphere. He believed that atoms of different elements had different masses and sizes, and that they combined in simple whole number ratios to form compounds. However, this model was later replaced by more advanced atomic models that better explained the behavior of atoms.
A a solid figure on a flat surface is a plane figure (I do believe)
Hexahedron