Let's analyze the statements regarding the oxygen atom:
-
The blue dots represent electrons in the electron cloud. - This statement is true. Electrons exist in an electron cloud around the nucleus.
-
There are 8 protons located in the nucleus. - This statement is true. Oxygen has an atomic number of 8, meaning it has 8 protons in its nucleus.
-
The total mass of this atom is a combination of red and yellow dots. - Assuming the red dots represent protons and the yellow dots represent neutrons, this statement is true. The mass of an atom primarily comes from its protons and neutrons.
-
There are 8 electrons located in the nucleus. - This statement is false. Electrons are found in the electron cloud, not in the nucleus.
-
The valence of oxygen is 6. - This statement is false. Oxygen has 6 valence electrons (in the second electron shell) and normally forms bonds by gaining or sharing 2 more electrons to achieve a full shell, but it does not have a valence of 6.
-
The valence is determined by the red and yellow dots. - This statement is false. Valence electrons are determined by the electrons in the outermost shell of the atom, not by protons (red dots) or neutrons (yellow dots).
Summary of True Statements
- The blue dots represent electrons in the electron cloud.
- There are 8 protons located in the nucleus.
- The total mass of this atom is a combination of red and yellow dots.
1 answer