Label the parts of the nitrogen cycle. You are currently in a labeling module. Turn off browse mode or quick nav, Tab to items, Space or Enter to pick up, Tab to move, Space or Enter to drop. Aboce ground there are animals, plants, and a factory. There is a rain cloud in the sky. Below ground there are dedcomposers, N O 3 minus, N H 3, N O 2 minus, and N H 4 plus. There are arrows between the various items. An arrow points from the plants to the animals. An arrow from the animals and plants points to the decomposers which has an arrow that points to N H 4 plus. An arrow points at N H 4 plus and the rain cloud from an area of the sky. An arrow from N H 4 plus points to N O 2 minus. An arrow from the factory points to N H 3, which has a arrow that also points to N O 2 minus. An arrow from N O 2 minus points to N O 3 minus. An arrowed labeled assimilation from N O 3 minus points towards the plants. A second arrow from N O 3 minus points towards the rain cloud.

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.