
Concept explainers
Interpretation:
The blanks in the table are to be filled.
Concept introduction:
The
The number of electrons in a neutral atom is exactly equal to the number of protons.
The mass number of an atom
Here,

Answer to Problem 99AP
Solution:
Explanation of Solution
For the first element,
Number of protons
Number of electrons
Number of neutrons
For the given element, thenumbers of protons and electrons are equal, so it is a neutral atom. Its atomic number is the number of protons. So, the atomic number of this element is
Substitute
The mass number is
Hence, thesymbol is
For the second element, the symbol given is
The atomic number of iron is
Substitute
The number of neutrons is
For the third element,
Number of neutrons
Number of electrons
Net charge on the element is
This element has gained three electrons, so the number of protons becomes
Substitute
The mass number is
Hence, the symbol is
For the fourth element,
Number of protons
Number of electrons
Number of neutrons
Thenumbers of protons and electrons are equal, so it is a neutral atom. The atomic number is equal to the number of protons. So, the atomic number of this element is
Substitute
The mass number is
Hence, the symbol is
For the fifth element,
Number of protons
Number of neutrons
Net charge
The net charge is zero, so it is a neutral atom. The number of electrons is equal to the number of protons, that is,
Substitute
The mass number is
Hence, the symbol is
The blanks in the given table are filled as shown below:
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Chapter 2 Solutions
CHEMISTRY >CUSTOM<
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- Complete the reaction in the drawing area below by adding the major products to the right-hand side. If there won't be any products, because nothing will happen under these reaction conditions, check the box under the drawing area instead. Note: if the products contain one or more pairs of enantiomers, don't worry about drawing each enantiomer with dash and wedge bonds. Just draw one molecule to represent each pair of enantiomers, using line bonds at the chiral center. + More... ☐ ☐ : ☐ + G 1. NaOMe Click and drag to start drawing a structure. 2. H +arrow_forward6. Ammonia reacts with nitrogen monoxide and oxygen to form nitrogen and water vapor. If the rate of consumption of NO is 4.5 mollitermin) (a) Find the rate of reaction (b) Find the rate of formations of N; and HO (c) Find the rate of consumption of NH, and O 4NH: 4NO 0:4: +60arrow_forward34. Give the expected major product of each of the following reactions. Conc. HI a. CH3CH2CH2OH b. (CH3)2CHCH2CH2OH Conc. HBr H Conc. HI C. OH Conc.HCI d. (CH3CH2)3COHarrow_forward
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