Atom Components and Chemical Symbols 5 of 26 Review Constants Periodic Table Particle Learning Goal: To understand the composition of the atom Aloms are composed of electrons, nations, and protone. Their properties are shown in the table to the right Electrons are the light of these three subatomic particles Electrons have a mass of 9.100 x 10 which is about 0.0% that of the mass of protons and retro, and he signed #1 chargectrons are distributed outside the nucleus of anatom. Note that despite the populo model, clectrons do not orbit fine distances from the center of an tom. Rather, they reside within an electron cloud as shown in the figure gure 1) Except for nuclear chemistry chemistry involves the debution of sections among different atoms of compounds Photos have a mass of 1.673 x 10 * Protons Mass Atomic mass Electrical charge Relative (6) units (C) charge electron 9.109 x 100.0005486 -1.602 x 10- -1 proton 1673 10- 1.007276 +1.602 x 10-11 +1 neutron 1.675 x 10 W 1.008665 0 0 Figure 102 The Momie number is the number of protons in the nucleus of an om of an element. Each months ago of protons. For example, an atom with 47 proton is always a ver om and has anatomie number of 47. The atomi number is used to distinguisholferent comments from one another The mass number is the sum of the number of protons and neurons in the nucleus of an tom of an element Atoms that have the same ato number but different mass number called on Foremplo, los with sommer are carbon atoms, but carbon atoms with mass numbers of 12 and 13 we isotopes of one another Each element is assigned a unique chemical symbol. For example, the symbol for hydrogen is H. and the symbol for our is. Some elements have symbols based on the names in languages other than English For example, the symbol foron is Pe, which is based on the Latino The atomic number, mass sumber and chemical symbol when combined to describe a given tom. For examp, som of hum (La) with atomic number and a mass number of 7 could be writton L. Since the womenumber and Beyol are both unique to a given element, the number is one of the notation ng Part A Homework 2 5 of 20 Heview l Constants Periodic Table Atom Components and Chemical Symbols an 9.100 x 10" which is about 0.05% that of the moes of protons and neutrons, and are assigned -1 charge. Electrons were idee nudeus of anom. Note that, despite the popular modellerons do not orbitat fixed distance from the art of an om Rather, they reside within an lectron cloud as shown in the figure Egure 1) for nuclear chemistry chemistry involves the distribution of chrons among different stoms of compounds Prators have a man of 1.673 10 Pro 1 charge The third batomic particle is the metron Neutron he approximately the same massas protons, but they do not have a charge. Along with protons, un comprise the nucleus the oom For 2) The atomic number of boron is What is the mass number of boron ator with pros? Express your answer as an integer View Available Hint) ang ASH Suomi Part Figure Anatomiasa masumber of 24 and 13 euros What is the atomic number of them Express your answer as an integer View Available HIM) VO AXO home number Review Constarts Periodic Table Part D 9.109 x 10- , which is about 0.05% that of the mes of protons and neutrons, and are assigned -1 charge. Electrons are distributed outside the nucleus of anatom. Note that, despite the popular model, electrons do not orbit at fixed distances from the center of an atom. Rather, they reside within an electron cloud as shown in the figure. Figure 1) Except for nuclear chemistry, all chemistry involves the distribution of electrons among different atoms of compounds Protons have a mass of 1:673 x 10-4 Protons reassigned a .1 charge The third suttomic particle is the neutron Neutrons have approximately the same massa protons, but they do not have a charge. Along with protons, neutrons comprise the nucleus at the chette of an atom (Figure 2) Anatom of iron is represented by Fe. How many neutrons are in the nucleus of this atom? Express your answer as an integer View Available Hint() th 2 neutrons in Fe Submit Figure Part E nucles Give the nuclear symbol for the isotope of potassium for which A40 Enter the nuclear symbol for the isotope (es. He). View Available Hints) 4