Bohr Diagrams Refresher

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is the element with atomic number 11?

Back

Sodium (Na) is the element with atomic number 11.

Front

What is the maximum number of electrons in the first shell (energy level)?

Back

The maximum number of electrons in the first shell is 2.

Front

What is the maximum number of electrons in the second shell (energy level)?

Back

The maximum number of electrons in the second shell is 8.

Front

What is a Bohr diagram?

Back

A Bohr diagram is a simple representation of an atom that shows the nucleus and the arrangement of electrons in energy levels.

Front

How many electrons can the third shell hold?

Back

The third shell can hold a maximum of 18 electrons.

Front

What is the significance of the atomic number in the periodic table?

Back

The atomic number determines the position of an element in the periodic table and its chemical properties.

Front

What element has the symbol 'Ca'?

Back

Calcium is the element with the symbol 'Ca'.

Front

What is the relationship between the number of protons and electrons in a neutral atom?

Back

In a neutral atom, the number of protons equals the number of electrons.

Front

What is the electron configuration for Sodium (Na)?

Back

The electron configuration for Sodium is 1s² 2s² 2p⁶ 3s¹.