![Chemistry & Chemical Reactivity](https://www.bartleby.com/isbn_cover_images/9781337399074/9781337399074_largeCoverImage.gif)
Give the periodic group number and number of valence electrons for each of the following atoms.
- (a) O
- (b) B
- (c) Na
- (d) Mg
- (e) F
- (f) S
(a)
![Check Mark](/static/check-mark.png)
Interpretation: The periodic group number and number of valence electron for the given atom should be identified.
Concept Introduction:
Periodic Table: The available chemical elements are arranged considering their atomic number, the electronic configuration and their properties. The elements placed on the left of the table are metals and non-metals are placed on right side of the table.
In periodic table the horizontal rows are called periods and the vertical column are called group.
There are seven periods and 18 groups present in the table and some of those groups are given special name as follows,
Valence electron: The electron is considered as valence electron if it present in outermost shell of atom which gets involved in the formation of chemical bond.
Answer to Problem 1PS
Oxygen (O) atom belongs to Group 6A and carrying six valence electrons.
Explanation of Solution
Oxygen (O) atom belongs to Group 6A so it must be carrying six valence electrons.
(b)
![Check Mark](/static/check-mark.png)
Interpretation: The periodic group number and number of valence electron for the given atom should be identified.
Concept Introduction:
Periodic Table: The available chemical elements are arranged considering their atomic number, the electronic configuration and their properties. The elements placed on the left of the table are metals and non-metals are placed on right side of the table.
In periodic table the horizontal rows are called periods and the vertical column are called group.
There are seven periods and 18 groups present in the table and some of those groups are given special name as follows,
Valence electron: The electron is considered as valence electron if it present in outermost shell of atom which gets involved in the formation of chemical bond.
Answer to Problem 1PS
Boron (B) atom belongs to Group 3A so it must be carrying three valence electrons.
Explanation of Solution
Boron (B) atom belongs to Group 3A so it must be carrying three valence electrons.
(c)
![Check Mark](/static/check-mark.png)
Interpretation: The periodic group number and number of valence electron for the given atom should be identified.
Concept Introduction:
Periodic Table: The available chemical elements are arranged considering their atomic number, the electronic configuration and their properties. The elements placed on the left of the table are metals and non-metals are placed on right side of the table.
In periodic table the horizontal rows are called periods and the vertical column are called group.
There are seven periods and 18 groups present in the table and some of those groups are given special name as follows,
Valence electron: The electron is considered as valence electron if it present in outermost shell of atom which gets involved in the formation of chemical bond.
Answer to Problem 1PS
Sodium (Na) atom belongs to Group 1A so it must be carrying one valence electron.
Explanation of Solution
Sodium (Na) atom belongs to Group 1A so it must be carrying one valence electron.
(d)
![Check Mark](/static/check-mark.png)
Interpretation: The periodic group number and number of valence electron for the given atom should be identified.
Concept Introduction:
Periodic Table: The available chemical elements are arranged considering their atomic number, the electronic configuration and their properties. The elements placed on the left of the table are metals and non-metals are placed on right side of the table.
In periodic table the horizontal rows are called periods and the vertical column are called group.
There are seven periods and 18 groups present in the table and some of those groups are given special name as follows,
Valence electron: The electron is considered as valence electron if it present in outermost shell of atom which gets involved in the formation of chemical bond.
Answer to Problem 1PS
Magnesium (Mg) atom belongs to Group 2A so it must be carrying two valence electrons.
Explanation of Solution
Magnesium (Mg) atom belongs to Group 2A so it must be carrying two valence electrons.
(e)
![Check Mark](/static/check-mark.png)
Interpretation: The periodic group number and number of valence electron for the given atom should be identified.
Concept Introduction:
Periodic Table: The available chemical elements are arranged considering their atomic number, the electronic configuration and their properties. The elements placed on the left of the table are metals and non-metals are placed on right side of the table.
In periodic table the horizontal rows are called periods and the vertical column are called group.
There are seven periods and 18 groups present in the table and some of those groups are given special name as follows,
Valence electron: The electron is considered as valence electron if it present in outermost shell of atom which gets involved in the formation of chemical bond.
Answer to Problem 1PS
Fluorine (F) atom belongs to Group 7A so it must be carrying seven valence electrons
Explanation of Solution
Fluorine (F) atom belongs to Group 7A so it must be carrying seven valence electrons
(f)
![Check Mark](/static/check-mark.png)
Interpretation: The periodic group number and number of valence electron for the given atom should be identified.
Concept Introduction:
Periodic Table: The available chemical elements are arranged considering their atomic number, the electronic configuration and their properties. The elements placed on the left of the table are metals and non-metals are placed on right side of the table.
In periodic table the horizontal rows are called periods and the vertical column are called group.
There are seven periods and 18 groups present in the table and some of those groups are given special name as follows,
Valence electron: The electron is considered as valence electron if it present in outermost shell of atom which gets involved in the formation of chemical bond.
Answer to Problem 1PS
Sulphur(S) atom belongs to Group 6A so it must be carrying six valence electrons.
Explanation of Solution
Sulphur (S) atom belongs to Group 6A so it must be carrying six valence electrons.
Want to see more full solutions like this?
Chapter 8 Solutions
Chemistry & Chemical Reactivity
- Q1: For each molecule, assign each stereocenter as R or S. Circle the meso compounds. Label each compound as chiral or achiral. OH HO CI Br H CI CI Br CI CI Xf x f g Br D OH Br Br H₂N R. IN Ill I -N S OMe D II H CO₂H 1/111 DuckDuckGarrow_forwardThese are synthesis questions. You need to show how the starting material can be converted into the product(s) shown. You may use any reactions we have learned. Show all the reagents you need. Show each molecule synthesized along the way and be sure to pay attention to the regiochemistry and stereochemistry preferences for each reaction. If a racemic molecule is made along the way, you need to draw both enantiomers and label the mixture as "racemic". All of the carbon atoms of the products must come from the starting material! ? H Harrow_forwardQ5: Draw every stereoisomer for 1-bromo-2-chloro-1,2-difluorocyclopentane. Clearly show stereochemistry by drawing the wedge-and-dashed bonds. Describe the relationship between each pair of the stereoisomers you have drawn.arrow_forward
- Classify each pair of molecules according to whether or not they can participate in hydrogen bonding with one another. Participate in hydrogen bonding CH3COCH3 and CH3COCH2CH3 H2O and (CH3CH2)2CO CH3COCH3 and CH₂ CHO Answer Bank Do not participate in hydrogen bonding CH3CH2OH and HCHO CH3COCH2CH3 and CH3OHarrow_forwardNonearrow_forwardQ4: Comparing (3S,4S)-3,4-dimethylhexane and (3R,4S)-3,4-dimethylhexane, which one is optically active? Briefly explain.arrow_forward
- Nonearrow_forwardNonearrow_forwardGiven the standard enthalpies of formation for the following substances, determine the reaction enthalpy for the following reaction. 4A (g) + 2B (g) → 2C (g) + 7D (g) AHrxn =?kJ Substance AH in kJ/mol A (g) - 20.42 B (g) + 32.18 C (g) - 72.51 D (g) - 17.87arrow_forward
- Determine ASran for Zn(s) + 2HCl(aq) = ZnCl2(aq) + H2(aq) given the following information: Standard Entropy Values of Various Substance Substance So (J/mol • K) 60.9 Zn(s) HCl(aq) 56.5 130.58 H2(g) Zn2+(aq) -106.5 55.10 CI (aq)arrow_forward3) Catalytic hydrogenation of the compound below produced the expected product. However, a byproduct with molecular formula C10H12O is also formed in small quantities. What is the by product?arrow_forwardWhat is the ΔHorxn of the reaction? NaOH(aq) + HCl(aq) → H2O(l) + NaCl(aq) ΔHorxn 1= ________ kJ/molarrow_forward