Answer:
- <u>The elements that belong to the nitrogen family are nitrogen, phosphorus, arsenic, antimonium, bismuth, and moscovium.</u>
Explanation:
<em>Families</em> are group of elements that belong to the same column in the periodic table.
Some families have a well known name. For instance, alkali metals is the family of the elements that belong to the first column: Li, Na, K, Rb, Cs, and Fr (H is an exception, in spite it is in the first column it does not belong to the alkali metals family because it is a nonmetal). Other well known families are alkaline earth metals (column 2), halogens (column 3), and noble gases (column 18).
All the members of a family have the same number of valence electrons, i.e. electrons in the outermost shell.
- <u>Nitrogen</u>, N, is in the column 15; it has 5 valence electrons, because its outer most shell has configurarion ns²np³ (n is 2 because nitrogen is in the second period).
The other members fo this family with the electron configuration of the outermost shell are:
- <u>Phosphorus</u>, P, 3s² 3p³ (third period)
- <u>Arsenic,</u> As, 4s² 4p³ (fourth period)
- <u>Antimonium</u>, Sb, 5s² 5p³ (fith period)
- <u>Bismuth</u>, Bi, 6s² 6p³ (sixth period)
- <u>Moscovium</u>, Mc, 7s² 7p³ (seventh period)
Answer:
81% Yield
Explanation:
2CO + O₂ => 2CO₂
Excess 3.70g O₂ => 8.25g CO₂ (actural yield)
(3.70g O₂)/(32g O₂/mol O₂)
= 0.1156 mol O₂ => 2(0.1156) mol CO₂
= 10.175g (Theoretical Yield)
%Yield = (Actual Yield / Theoretical Yield)100%
= (8.25g/10.175g)100% = 81% Yield
Answer:
Percentage of oxygen = 30%
Percentage of carbon = 30%
Percentage of hydrogen = 40%
Explanation:
Formula:
Percentage of element = given amount / total amount × 100
Given compound:
C₆H₈O₆
Number of atoms of carbon = 6
Number of atoms of hydrogen = 8
Number of atoms of oxygen = 6
Total number of atoms = 20
Percentage of carbon = 6/20 × 100
Percentage of carbon = 30%
Percentage of Hydrogen = 8/20 × 100
Percentage of Hydrogen = 40%
Percentage of oxygen = 6/20 × 100
Percentage of oxygen = 30%
Answer:
phosphorus - least similar to barium
beryllium - most similar to barium
Explanation:
The formula of the chloride formed between barium and chlorine is BaCl2.
Barium is a metallic element and has the valency of +2. Beryllium is also a group two metal with a valency of +2. Hence the compound formed between beryllium and chlorine is BeCl2
Phosphorus is a nonmetal and forms a completely different chloride from BaCl2. The chloride of phosphorus is PCl5 and PCl3. These are least similar to BaCl2
Answer:
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