Question

two main - group elements are highlighted in the outline of the periodic table below:
what can you say about these elements without knowing exactly which they are? use that k
important: do not try to figure out exactly which elements are marked, and then use your k
to. you will also be marked wrong for any answer, correct or not, that cant be determined fr
which element probably releases more
heat when it reacts with oxygen?
element x
element y
cant say without more information.
which element in its solid state
probably conducts heat less
effectively?
element x
element y
cant say without more information.
which element in its solid state
probably conducts electricity better?
element x
element y
cant say without more information.

Explanation:

• For the first question: Generally, metals (Element X is likely a metal as it is in the left - side main - group) react more vigorously with oxygen and release more heat.
• For the second question: Non - metals (Element Y is likely a non - metal as it is in the right - side main - group) are poor conductors of heat in solid state.
• For the third question: Metals (Element X) are good conductors of electricity in solid state.

Answer:

Element X; Element Y; Element X