Atomic Structure Quiz

What are the subatomic particles found in the nucleus of an atom?

• Protons and electrons

• Protons and neutrons

• Electrons and neutrons

• Protons, electrons, and neutrons

Answer explanation

The nucleus of an atom contains two types of subatomic particles, which are protons and neutrons. Protons carry a positive electrical charge, while neutrons have no electrical charge. Electrons, on the other hand, revolve around the nucleus in orbits and carry a negative charge.

Where are electrons located in an atom?

• In the nucleus

• In the electron cloud

• In the outermost shell

• In the innermost shell

Answer explanation

Electrons in an atom are located in the electron cloud, which is an area surrounding the nucleus. This area is where electrons are likely to be found as they move around the nucleus. The other options referring to the nucleus and shells are parts of the atom but do not accurately represent the specific location of electrons.

What is the electrical charge of protons?

• Positive

• Negative

• Neutral

• No charge

Answer explanation

The question asks about the electrical charge of protons. Protons, found in the nucleus of an atom, carry a positive charge. This distinguishes them from neutrons, which are neutral, and electrons, which are negative. Therefore, the correct answer is 'Positive'.

Tags

NGSS.MS-PS2-3

How many electrons are required for stability in atoms with only one energy level or shell?

• 1

• 2

• 6

• 8

Answer explanation

Atoms are most stable when their outermost energy level is full. In the case of atoms with only one energy level, such as hydrogen and helium, the energy level can hold up to two electrons. Therefore, two electrons are needed for stability in atoms with only one energy level or shell.

Which element is stable because it has 8 electrons in its outermost shell?

• Carbon

• Helium

• Neon

• Oxygen

Answer explanation

The stability of an element is determined by the fullness of its outermost shell. The element Neon is stable because it has a full outermost shell with 8 electrons. This state is known as a noble gas configuration, which is the most stable due to the fullness of the energy levels.

What is the maximum number of electrons that can be accommodated in the second shell of an atom?

• 2

• 4

• 6

• 8

Answer explanation

The second shell of an atom, also known as the second energy level, can accommodate up to 8 electrons. This is based on the 2n^2 rule (where n represents the shell number). So, for the second shell (n=2), the maximum number of electrons is 2*(2^2) = 8.

What is the electrical charge of electrons?

• Positive

• Negative

• Neutral

• No charge

Answer explanation

The question asks about the electrical charge of electrons. Electrons, fundamental particles in atoms, have a negative charge. Therefore, the correct answer to this question is 'Negative'. Other options such as 'Positive' and 'Neutral' are incorrect because they do not correctly describe the charge of an electron, while 'No charge' is also incorrect as electrons do possess a negative charge.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Where are protons located in an atom?

• In the nucleus

• In the electron cloud

• In the outermost shell

• In the innermost shell

Answer explanation

Protons are fundamental particles that reside within the nucleus of an atom. They are positively charged and, together with neutrons, make up the nucleus. Hence, 'In the nucleus' is the correct option.