Question

Multiple-Cholce: Select the best answer to each of these multiple choice 1. Which of the following descriptions of a subatomic particle is correct? a) A proton has appositive charge and a mass of approximately 1 amu 9. b) An electron has a negative charge and a mass of approximately 1 amu c) A neutron has no charge and its mass is negligible d) A proton has appositive charge and a negligible mass. e) A neutron has appositive charge and a mass of approximately 1 amu 2. Consider a neutral atom with 30 protons and 34 neutrons. The atomic number of this el a) 30 6) 32 () 34 d) 64 e) 94 3. How many protons are in an isotope of sodium with mass number of 257 A) 14 6) 11 () 15 d) 23 e) 32 4. Which of the following gives the correct number of protons, neutons and electrons in a neu atom of usn? a). 118 protons, 50 neutrons, 118 electrons b) 118 protons, 118 neutrons, 50 electrons c) 50 protons, 68 neutrons, 50 electrons d) 68 protons, 68 neutrons, 50electrons e) 50 protons, 50 neutrons, 50 electrons 5. The octet rule indicates that a) All of the noble gases have a total of eight electrons b) All of the shells of an atom hold a maximum of eight electrons c) Atoms lose, gain, or share valence electrons to have eight valen d) The noble gases react with other compounds to give 8 valen s to have eight valence electrons nds to give 8 valence electrons 6. In ionic compounds, lose their valence electrons to form a) Metals, anions b) Nonmetals, cations c) Metals, polyatomic ions d) Nonmetals, anions e) Metals, cations lectrons to form positively charged

Answer 1

(9) A poston has appositive charge and a mass of approximately Lamu o Atomic numbex - () 30 3. (6) 11 Qi s h ) 50 protons, 68 neutrons, so electron's 5. 9) All of the noble gases have a total of eight phie electrons Top 6 In Tonic Compounds, Metalselose their Valence electrons to form positively charged Cations e) Metals , Cations.