A company is trying to design new carbon monoxide detectors that register carbon monoxide at a level of 5 parts per million (ppm). The company engineers decide that the detector needs improvement and start designing new versions. They develop each new version based on new ideas and the features that worked in the previous one. They continue testing each new version in the process. Which process does this best describe?

The question is incomplete; the complete question is;

A company is trying to design new carbon monoxide detectors that register carbon monoxide at a level of 5 parts per million (ppm). The company engineers decide that the detector needs improvement and start designing new versions. They develop each new version based on new ideas and the features that worked in the previous one. They continue testing each new version in the process. Which process does this best describe?

making trade-offs

the iterative design process

process and system optimization

evaluating advantages and disadvantages

the iterative design process

Explanation:

The Iterative design is a circular design process which comprises of models that are regularly evaluated and improved  based on the results of testing of previous models or versions.

Hence, when the company is involved in developing a new version of the carbon monoxide detector by evaluating the older  versions and continue testing each new version, they are involved in the circular process of iterative design.

assuming that your periodic table has eighteen columns, you should highlight   the four elements in the third column from the left of the table.

neutral atoms of elements after calcium contain d electrons. the energy of d orbitals of a particular main shell lies between the energy of the s and p orbitals of the next main shell. for example, electrons in the have energy higher than those in the orbital while lower than those of the orbital.

by the aufbau principle, electrons fill orbitals one at a time, starting from those of the lowest energy. the orbital is therefore filled right after orbitals and before orbitals.  

potassium has electron configuration and calcium . the s orbital of a main shell holds a maximum of two electrons. the next element would thus have the electron configuration and satisfy the requirements.

a neutral atom of the element contains three electrons on top of the most recent noble gas element. it should thus be placed in the third column of the periodic table. both scandium and yttrium would satisfy the conditions. an aufbau diagram indicates that the 4f orbital is filled before the 5d. however, it appears that exceptions exists for both lanthanum and actinium. neutral atoms of the two d-block elements also demonstrate the and should be highlighted as well.

more infor would

a lot