Explanation

• Gallium-67 is commonly used for the detection of prolonged infection and cancer cells.
• Gallium-67 citrate scans are frequently employed in nuclear medicine to locate inflammatory processes and malignant tumors.

Explanation

• Copper - 64 isotope is used to kill cancer cells.
• By a particular type of treatment, known as radiotherapy.

Explanation

• Deuterium, also known as heavy hydrogen.
• It has 1 proton and 1 neutron in its atomic nucleus.

Explanation

• Protium is the lightest and most abundant isotope of hydrogen.
• It has only 1 proton in its atomic nucleus.

Explanation

• Atoms that gain electrons become negatively charged ions.
• These are known as Anions.

Explanation

• When an atom gains or loses electrons, it becomes an ion.
• If it gains electrons, it becomes a negative ion (anion).
• It it loses electrons, it becomes a positive ion (cation).

Explanation

• The formula 2n^2 helps in determining the maximum number of electrons present in an orbit, where n is the principal quantum number (energy level).
• This formula is based on the Aufbau principle and the Pauli exclusion principle, which describe how electrons occupy energy levels in an atom.

Explanation

The number shown below the symbol of an element on the periodic table is called the Atomic Mass (or Average Atomic Mass).

It represents the average mass of the element's isotopes, usually featuring decimal places. 

Additional information

Atomic Number (usually above symbol): The number of protons.

Mass Number (not typically on the table): Total protons + neutrons. 

Explanation

The number shown above the symbol of an element on the periodic table is called the atomic number.

This number represents the number of protons in the nucleus of an atom of that element, which uniquely identifies the element. 

Explanation

In the modern periodic table, there are 18 groups (vertical columns) and 7 periods (horizontal rows).