Engineering Design:Question 2 Which is a criterion in engineering design?
Select one:
A principle to follow as something is built, to ensure it works as intended.
Determining the cost and schedule when building something.
O O O
A limit to what can be done or what can be used when building something.
Understanding the scientific principles behind something that is being built.

c.

explanation:

2b2t

explanation:

2b2t

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;