For elements with serial numbers 28, 36, 57, 84, determine the charge of the nucleus
For elements with serial numbers 28, 36, 57, 84, determine the charge of the nucleus of their atoms, the number of electrons in the atom.
At number 28 in the periodic table is nickel Ni, the charge of the nickel nucleus is “+28”, the number of electrons in the atom is 28 with a “-” sign.
At number 36 in the periodic system is krypton Kr, the charge of the krypton nucleus is “+36”, the number of electrons in the atom is 36 with a “-” sign.
At number 57 in the periodic table is lanthanum La, the charge of the lanthanum nucleus is “+57”, the number of electrons in the atom is 57 with a “-” sign.
At number 84 in the periodic table is polonium Po, the charge of the polonium nucleus is “+84”, the number of electrons in the atom is 84 with a “-” sign.