d and f BLOCK ELEMENTS

What does the text state about the current status of element discovery efforts?

• They have ceased completely
• They are focused only on finding elements in space
• They are ongoing and active
• They are only theoretical at this point

What is the main goal of studying periodic trends according to the unit's objectives?

• To memorize element symbols
• To calculate atomic masses
• To recognize patterns in physical and chemical properties
• To determine the age of elements

Based on the text, what distinguishes many of the recently discovered elements (beyond element 100)?

• They are extremely abundant in nature
• They are highly stable
• They are artificially created
• They have very low atomic numbers

What is one predictive function of the Periodic Table mentioned in the introductory quote?

• It predicts the end of chemical discovery
• It suggests new avenues of research
• It forecasts economic trends in chemistry
• It determines the exact date of element discovery

What does the quote by Glenn T. Seaborg suggest about the nature of chemical elements?

• They are all identical in properties
• They exist only as gases
• They exhibit systematic patterns and group into families
• They were created randomly in the universe