Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Question
Most elements are classified as _____.
a.) metalloids
b.) noble gases
c.) metals
d.) nonmetals
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- determine atomic number, mass number, number of protons and number of electrons in a neutral atom potassium of with 22 neutrons.arrow_forwardWhich of the following elements is NOT a noble gas at room temperature? a. chlorine b. oxygen c. neon d. argon e. nitrogenarrow_forwardPlease help me answer questions 3 & 65. 3. Oxidation is A. the loss of protons by an atom or molecule. B. the gain of oxygen by a cell. C. the loss of electrons from an atom or molecule. D. the loss of oxygen from a cell. E. The gain of electrons by an atom or molecule. 65. The atomic number of an atom or element is the number of A. neutrons in the nucleus. B. protons in the orbitals. C. Electrons in the nucleus. D. Neutrons in the orbitals E. Protons in the nucleus.arrow_forward
- Please correct answer and don't use hend raitingarrow_forwardTrue or False...and why? a.) If you change number of protons, you have isotopes of an element b.) If you change number of neutrons, ions are created c.) If you change number of electrons, you have a different elementarrow_forwardThe mass number of an isotope tells you the number of... A.protons and electrons. B. protons. C. nucleons. C. electrons. D. neutrons.arrow_forward
- Question 34. Classify each element as a halogen, Noble has , or neither. rubidium a.neither b. noble c.halogenarrow_forwardThe relative atomic masses of elements are seldom whole numbers because A. atoms of some elements have different atomic numbers. B. atoms of some elements have different masses. C. atoms of some elements have different numbers of electrons. D. atoms of some elements can form ions.arrow_forwardWhich element is represented by the following symbol A. Chromium B. germanium C. barium D. ironarrow_forward
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