Concept explainers
(a)
Interpretation:
The Roman numeral periodic – table group number and valence electrons of
Concept Introduction:
The electrons present in the outermost shell of the atom are known as valence electrons.
Valence electrons are important because:
- The valence electrons decide the reactivity of an element.
- The valence electrons decide the manner in which an atom form a bond with another atom.
- The valence electron in an atom decides the combining capacity of the element.
- Except inner
transition elements valence electrons are present in s or psubshells of elements. - For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.
- The group number is similar to number of valence electrons of an atom.
(b)
Interpretation:
The Roman numeral periodic – table group number and valence electrons of
Concept Introduction:
The electrons present in the outermost shell of the atom are known as valence electrons.
Valence electrons are important because:
- The valence electrons decide the reactivity of an element.
- The valence electrons decide the manner in which an atom form a bond with another atom.
- The valence electron in an atom decides the combining capacity of the element.
- Except inner transition elements valence electrons are present in s or psubshells of elements.
- For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.
- The group number is similar to number of valence electrons of an atom.
(c)
Interpretation:
The Roman numeral periodic – table group number and valence electrons of
Concept Introduction:
The electrons present in the outermost shell of the atom are known as valence electrons.
Valence electrons are important because:
- The valence electrons decide the reactivity of an element.
- The valence electrons decide the manner in which an atom form a bond with another atom.
- The valence electron in an atom decides the combining capacity of the element.
- Except inner transition elements valence electrons are present in s or psubshells of elements.
- For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.
- The group number is similar to number of valence electrons of an atom.
(d)
Interpretation:
The Roman numeral periodic – table group number and valence electrons of
Concept Introduction:
The electrons present in the outermost shell of the atom are known as valence electrons.
Valence electrons are important because:
- The valence electrons decide the reactivity of an element.
- The valence electrons decide the manner in which an atom form a bond with another atom.
- The valence electron in an atom decides the combining capacity of the element.
- Except inner transition elements valence electrons are present in s or psubshells of elements.
- For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.
- The group number is similar to number of valence electrons of an atom.
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General, Organic, and Biological Chemistry
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- Name and describe the composition of the three hydrogen isotopes.arrow_forwardWhat is apolyatomicion? Give examples of five common polyatomic ions.arrow_forwardIn forming an ionic bond with an atom of chlorine, a sodium atom will: a.receive one electron from the chlorine atom. b.receive two electrons from the chlorine atom. c.give up one electron to the chlorine atom. d.give up two electrons to the chlorine atom.arrow_forward
- For each of the negative ions listed in column 1, use the periodic table to find in column 2 the total number of electrons the ioncontains. A given answer may be used more than once. Column 1 Column 2 [ 1] Se2 [a] 18 [ 21 S2 [b] 35 [ 31 P3 [c] 52 [ 4] O2 [d] 34 [ 5] N3 [e]36 [6] I [f] 54 [7] F [g] 10 [8] Cl [h]9 [9] Br [i] 53 [101 At [j] 86arrow_forwardClassify each of the following as a binary compound or not a binary compound: a. HF b. OF2 c. H2SO4 d. H2S e. MgBr2arrow_forwardPlease answer only questions 13 and 14arrow_forward
- When cesium reacts with chlorine to form an ionic compound, each metal atom loses ____ electron(s) and each nonmetal atom gains ___ electron(s). There must be___ cesium-atom(s) for every___ chlorine atom(s) in the reaction.arrow_forwardQUESTION 10 When sodium chloride dissolves in water, how do the water molecules orient around the ions? O A. Water molecules are randomly oriented around the ions. O B. The hydrogen atoms point toward both the sodium and the chloride. O C. The oxygen atoms point toward both the sodium and the chloride. O D. Around sodium the oxygen atoms point toward the sodium, and around chloride the hydrogen atoms point toward the chloride. QUESTION 11 Elements in group 17 (7A) are called O A. alkali metals O B. halogens O C. Noble gasses O D. alkaline earth metals QUESTION 12 A scientific law O A. is a brief statement that summarizes past observations and makes predictions? O B. is subject to change via legal action O C. contains an explanation of observations O D. cannot be modifiedarrow_forwardHow does sodium atom become sodium ion?arrow_forward
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