An atom has a mass number of 43 and it also has 21 electrons.
a) How many protons does this atom have?
b) What is the identity of this atom?
C) How many neutrons does this atom have? d)
Draw the Bohr model of this atom.
a) Since the mass number of an atom is the sum of its protons and neutrons, we can calculate the number of protons by subtracting the number of neutrons from the mass number. Therefore, the number of protons in this atom is 43 - 21 = 22 protons.
b) The identity of this atom can be determined by looking at the periodic table. The element with 22 protons is Titanium (Ti).
c) Neutrons can be calculated by subtracting the number of protons from the mass number. Therefore, this atom has 43 - 22 = 21 neutrons.
d) The Bohr model of Titanium (Ti) with 22 protons, 21 neutrons, and 21 electrons would have 2 electrons in the first energy level, 8 electrons in the second energy level, and 11 electrons in the third energy level. The remaining 2 electrons would be in the fourth energy level.