: a type of observation which can be counted or measured, often using tools like a thermometer, a scale, or a ruler. : all the data collected during scientific investigations. It is best gathered by doing the investigation yourself, not reading other peoples’ work. (two words) Scientific : a specific relationship under given conditions that tells what happens in the natural world. Based on a body of evidence, they are universal and will rarely if ever change. Scientific : a well-supported and widely accepted explanation of nature. They can and do change if new evidence arises.

A Quantative Observation: A type of observation which can be counted or measured, often using tools like a thermometer, a scale, or a ruler.

Observation: All the data collected during scientific investigations. It is best gathered by doing the investigation yourself, not reading other peoples’ work.

Scientific Law: a specific relationship under given conditions that tells what happens in the natural world. Based on a body of evidence, they are universal and will rarely if ever change.

Scientific Theory: a well-supported and widely accepted explanation of nature. They can and do change if new evidence arises.

I hope I got these right and I hope you got the help you wanted!

the answer would be c

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.