Atoms structure

The smallest part of the atom is:

• Protons

• Nucleus

• Electrons

• Neutrons

Carbon and Oxygen are in the same period so it means:

• They react with other elements in the same way

• They have the same number of valence electrons

• They have the same number of electron shells

• They are both metals

The atomic number is the number of:

• Neutrons

• Element

• Protons

• Nucleus

There are no 2 elements with the same atomic mass number

• True

• False

When most of the Alpha rays passed through the gold foil not deflected, it meant that:

• It went through the positive matter

• Most of the atom is empty space

• The atom is smaller than anything else

• It doesn't have positive charge

"The atom is a large, positively charged block with electrons distributed within" .. this statement refers to:

• Rutherford model

• The plum pudding model

• Dalton model

• The modern model

The nucleus in an atom has a ________________ charge.

• Positive

• Neutral

• Negative

Halogens are elements in the same group.

• True

• False

One of the differences between the isotopes and regular atom is

• They have different number of protons

• They have different number of electrons

• They have different number of neutrons

An element with electronic configuration of 2,8,5 has

• 15 protons

• 2 electrons

• 2 electron shells

• 8 valence electrons