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AURORKA [14]
3 years ago
5

Describe the trends in electron configuration in the periodic table by selecting the terms from the drop-down menus.

Chemistry
2 answers:
sladkih [1.3K]3 years ago
7 0
  1. The number of valence electrons increases from the left to right across a period.
  2. The number of valence electrons stays the same from the top to the bottom of a group.
  3. Electrons are added into the outermost s orbital in Groups 1 and 2.
  4. Electrons are added into the outermost d orbital in Groups 3 through 12.
  5. Electrons are added into the outermost p orbital in Groups 13 through 18.
natka813 [3]3 years ago
5 0
1)Left to right in a period it goes up by one
2) the number valence electrons are the same from top to bottom
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Explanation:

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How many moles are equal to 89.23g of calcium oxide, CaO?
Katen [24]

1.59moles

Explanation:

Mass  of CaO = 89.23g

Unknown

Number of moles = ?

Solution:

The mole is a unit of measurement in chemistry used to delineate the number of particles an atom contains.

A mole of a substance contains the avogadro's number of particles.

Number of moles = \frac{mass}{molar mass}

Molar mass of CaO = 40 + 16 = 56g/mol

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Number of moles brainly.com/question/1841136

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8 0
3 years ago
A thin metallic spherical shell of radius 41.6 cm has a total charge of 8.55 μC uniformly distributed on it. At the center of th
Paul [167]

Answer:

E = 1.2443*10⁶ N/C

Explanation:

R = 41.6 cm = 0.416 m

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Q₀ = 4.43 μC = 4.43*10⁻⁶C

r = 17.9 cm = 0.179 m

K = 9*10⁹ N*m²/C²

Since r < R  we can apply Gauss's Law as follows

E = K*Q₀ / r²

⇒  E = (9*10⁹ N*m²/C²)*(4.43*10⁻⁶C) / (0.179 m)²

⇒  E = 1.2443*10⁶ N/C

5 0
3 years ago
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Montano1993 [528]

1. Solids

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2. Liquids

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