Which of the following best defines an allotrope? Question 1 options:

Crystalline forms

Carbon atoms

Different forms of the same element

Similar bonding arrangements between atoms

Check the correct box to describe the periodic trends in electronegativity. electronegativity across a period: decreases. increases. electronegativity down a group: decreases. increases.

Which statement is usually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.

Which statement describes james chadwick’s discovery.