In a particular calcium atom, number of protons are 20, number of neutrons are 21 and that of electrons are 19. Here, protons are positively charged particles, neutrons are neutral and electrons are negatively charged particles. For a neutral atom, number of protons should be equal to number of electrons. If number of protons are more than number of electrons cation will form (positive charge) and if number of protons are less than number of electrons anion will form (negative charge).
Here, number of protons are 20 and that of electrons are 19, protons is 1 more than electron thus, Ca will get one positive charge and exist as Ca^{+}. Thus, the electrical charge on the atom will be +1.
Atomic size is the distance from the nucleus to the valence shell where the valence electrons are located. The separation that occurs because electrons have the same charge. The number of protons in the nucleus. The core electrons in an atom interfere with the attraction of the nucleus for the outermost electrons.
Am I the bad guy for killing my fish, let me explain?
Explanation:
The fish said a bad word that was incredibly inappropriate, so then I told him to never say that again. He responds with, "No, I CAN SAY WHATEVER I WANT." After that I told him to not yell at me and then I killed him, remember he's a fish (GoldFISH).
The metal ion indicator is a type of volumetric analysis wherein the colored complex is used to determine the endpoint of the titration. Therefore, it can be used to detect the end-point of an EDTA titration.