The opposite graphical figure illustrates
the melting points of different elements,
among which is sodium „Na, which of
the illustrated letters represents sodium
element ? ..........
A
B
C
D

A

Explanation:

Sodium is a metal.. And characteristcs of metal indicates that they have low melting and high boiling point.

Assuming atoms are shaped like spheres, what subatomic particles would be found in the center? What subatomic particles would be found around the perimeter? Center (nucleus) – protons & neutrons. Perimeter - electrons 3.

The three main subatomic particles that form an atom are protons, neutrons, and electrons. The center of the atom is called the nucleus. First, let's learn a bit about protons and neutrons, and then we will talk about electrons a little later. Protons and neutrons make up the nucleus of an atom.

Explanation: