WHAT IS LIFE? GDE.TO BIOLOGY W/PHYSIO.
5th Edition
ISBN: 9781319272531
Author: PHELAN
Publisher: MAC HIGHER
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Chapter 2, Problem 1MC
Summary Introduction
To analyze:
The components that make up the nucleus of the carbon atom.
Introduction:
The term Carbon is derived from the Latin language’s word “Carbo” which means “Coal”. It is represented with the symbol “C” and has an atomic number 6. Being nonmetallic in nature, carbon also has four electrons free for covalent bonding and thus, is called tetravalent. In the periodic table, C is placed in group 14.
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Which of the following is not a fundamental subatomic particle that forms elements?
Which of the following is not a fundamental subatomic particle that forms elements?
electrons
protons
nucleus
neutrons
The most important atomic property for explaining bonding behavior is the
number of protons.
number of electrons in the valence energy level.
mass of the atom.
number of neutrons.
number of electron energy levels.
Chapter 2 Solutions
WHAT IS LIFE? GDE.TO BIOLOGY W/PHYSIO.
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- Visit this website (http://openstaxcollege.org/l/ptable) to view the periodic table. In the periodic table of the elements, elements in a single column have the same number of electrons that can participate in a chemical reaction. These electrons are known as valence electrons. For example, the elements in the first column all have a single valence electron—an electron that can be donated in a chemical reaction with another atom. What is the meaning of a mass number shown in parentheses?arrow_forwardWhat kinds of bonds often control the shape (or tertiary form) of large molecules such as proteins? a. hydrogen b. ionic c. covalent d. inert e. singlearrow_forwardAtoms that vary in the number of neutrons found in their nuclei are called _____________. ions neutrons neutral atoms isotopesarrow_forward
- A. The first shell corresponds to the first energy level, and it can hold up to 2 electrons. Hydrogen has one proton, so it has 1 electron and one vacancy. A helium atom has 2 protons, 2 electrons, and no vacancies. B. The second shell corresponds to the second energy level, and it can hold up to 8 electrons. Carbon has 6 electrons, so its first shell is full. Its second shell has 4 electrons and four vacancies. Oxygen has 8 electrons and two vacancies. Neon has 10 electrons and no vacancies. C. The third shell corresponds to the third energy level, and it can hold up to 8 electrons. A sodium atom has 11 electrons, so its first two shells are full; the third shell has one electron. Thus, sodium has seven vacancies. Chlorine has 17 electrons and one vacancy. Argon has 18 electrons and no vacancies. Figure It Out: Which of these models have unpaired electrons in their outer shell?arrow_forwardFigure 2.24 Which of the following statements is false? Molecules with the formulas CH3CH2COOH and C3H6O2 could be structural isomers. Molecules must have a double bond to be cis-trans isomers. To be enantiomers, a molecule must have at least three different atoms or groups connected to a central carbon. To be enantiomers, a molecule must have at least four different atoms or groups connected to a central carbon.arrow_forwardWhich of the following combinations describes the electron in the modern model of an atom? O negative charge and located in orbitals surrounding the nucleus Opositive charge and located in orbitals surrounding the nucleus negative charge and located in the nucleus Ono charge and located in the nucleusarrow_forward
- two atms of an element have the same number of protons electrons plus neutrons protons plus neutrons electronsarrow_forwardWhich of the following are true about covalent bonds? Select all that apply. In a covalent bond, one electron is transferred from one atom to another. A triple covalent bond forms when atoms share six electrons. A double covalent bond occurs in H,. A double covalent bond occurs when two atoms share two pairs of electrons. Single covalent bonds are quite strong, but double and triple bonds are even stronger.arrow_forwardHow many protons are present in the atomic nucleus of oxygen (based on the atomic number)? 8 protons 16 protons 24 protons 32 protons 40 protonsarrow_forward
- Why the Number of Electrons Matter Since we know each element as a defined number of protons, we can also use that number to determine the number of electrons, assuming the element has no charge. Let’s write some out: ELEMENT NUMBER OF PROTONS NUMBER OF ELECTRONS C A B O C D Al E F Na G H Si I Jarrow_forwardSilver (Ag) atoms contain fewer electrons, neutrons and protons than Gold (Au) atoms. To change Silver into Gold, a chemist might try to add nucleus, because these particles are the ones that to the determine the identity of an atom. protons and electrons neutrons electrons neutrons and electrons protonsarrow_forwardThe most abundant form of carbon has an atomic number of 6 and a mass of 12. A small amount of carbon exists as the isotope carbon 14. What number of protons, neutrons, and electrons would you expect to see in an atom of carbon 14?arrow_forward
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