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KiRa [710]
3 years ago
12

Position in the periodic table.

Chemistry
1 answer:
Nikolay [14]3 years ago
4 0

Answer:

1)A period in the periodic table is a horizontal row. All elements in a row have the same number of electron shells. ... Periods are horizontal rows (across) the periodic table, while groups are vertical columns (down) the table. Atomic number increases both as you move down a group or across a period.

2)D)Na has one fewer valence electron than Ca.

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Aluminum has a density of 2.70 g/m. Calculate the mass (in grams) of a piece of aluminum having a volume of 382 mL
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The aluminum has a mass of 1031.4 grams.

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Will mark brainliest
OverLord2011 [107]

Answer:

4. Principal and Azimuthal (subsidiary) quantum number

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6. 10 electrons

7. 32 electrons

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Explanation:

4. Principal and Azimuthal (subsidiary) quantum number because in 4d, 4 represent principal quantum number and d- represents azimuthal quantum number (having l- value as 3)

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,n= 4 , hence 2×4^2= 32

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8 0
3 years ago
While a certain isotope decays, it emits photons. What kind of decay is happening?
gizmo_the_mogwai [7]
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6 0
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Read 2 more answers
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Answer:

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7 0
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Fritz-Haber process
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Answer:

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Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

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From the balanced equation above, we can say that:

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Finally, we shall determine the volume of ammonia (NH3) produced by the reaction of 7.5×10⁵ L of H2. This can be obtained as illustrated below:

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3 L of H2 reacted to produce 2 L of NH3.

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6 0
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