Isotopes

Front

What is an isotope?

Back

Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons, resulting in different atomic masses.

Front

How is an atom electrically neutral?

Back

An atom is electrically neutral when the number of protons (positively charged) equals the number of electrons (negatively charged).

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

How do you calculate the number of neutrons in an isotope?

Back

To find the number of neutrons in an isotope, subtract the atomic number (number of protons) from the mass number (total number of protons and neutrons).

Front

What is the mass number of an isotope?

Back

The mass number is the total number of protons and neutrons in the nucleus of an atom.

Front

What is the symbol for an isotope?

Back

The symbol for an isotope is written as 'ElementSymbol-MassNumber', e.g., C-14 for Carbon-14.

Front

How many neutrons are in Neon-22?

Back

Neon-22 has 12 neutrons.

Front

What are the isotopes of Carbon?

Back

The isotopes of Carbon include Carbon-12 (6 neutrons), Carbon-13 (7 neutrons), and Carbon-14 (8 neutrons).

Front

What does the notation 76 protons and 114 neutrons represent?

Back

This notation represents the isotope Osmium-190, as the mass number is 76 + 114 = 190.

Front

Which isotopes are represented by the symbols I. 77_35X and IV. 81_35X?

Back

I. 77_35X and IV. 81_35X are isotopes of the same element, as they have the same atomic number (35) but different mass numbers.