Chlorine Atomic Structure and Isotopes

The video explains whether isotopes can form ions, using chlorine as an example. Chlorine has isotopes with different numbers of neutrons, such as chlorine-35 and chlorine-37. Despite these differences, isotopes can form ions because the chemical reactivity is determined by the electronic structure, not the number of neutrons. Chlorine can gain an electron to achieve a stable octet, forming a negative ion. The video concludes that isotopes can indeed form ions, and the periodic table reflects the average atomic mass based on isotopic abundance.

What is the atomic number of chlorine?

• 16

• 18

• 19

• 17

How many protons are present in all chlorine atoms?

• 19

• 18

• 17

• 16

What is the mass number of chlorine-35?

• 35

• 36

• 37

• 38

How many neutrons does chlorine-37 have?

• 20

• 19

• 18

• 17

What primarily affects the chemical reactivity of an atom?

• Number of protons

• Number of neutrons

• Atomic mass

• Electronic structure

What is required for chlorine to achieve a stable electronic configuration?

• Gain one electron

• Lose one electron

• Lose one proton

• Gain one proton

What type of ion does chlorine become after gaining an electron?

• Negative ion

• Positive ion

• Neutral atom

• Isotope

What is the significance of the average atomic mass on the periodic table?

• It represents the mass of the most common isotope.

• It is the sum of protons and neutrons in the most abundant isotope.

• It is the mass of the heaviest isotope.

• It is an average of the isotopes based on abundance.

Do isotopes of chlorine react differently due to their different neutron numbers?

• Sometimes they react differently

• They do not react at all

• No, they react the same

• Yes, they react differently

Can isotopes form ions?

• Only in gaseous state

• No, they cannot

• Yes, they can

• Only in certain conditions