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Katyanochek1 [597]
3 years ago
12

elect the correct answer. The elements beryllium, calcium, and strontium are all in group 2. What is the correct relationship of

these elements regarding their ionization energy? A. Ca < Be < Sr B. Sr < Be < Ca C. Be < Ca < Sr D. Sr < Ca < Be E. Ca < Sr < Be

Chemistry
1 answer:
deff fn [24]3 years ago
3 0

Answer:

D. Sr < Ca < Be  

Step-by-step explanation:

<em>Ionization energ</em>y decreases from top to bottom within a Group, because the valence electrons are further from the nucleus and therefore easier to remove.

Thus, <em>Sr has the lowest</em> ionization energy and <em>Be the highes</em>t.

The correct order is Sr < Ca < Be.

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2 years ago
The density of helium is 0.17 g/L. What Is the mass of helium in a 5.4 L helium balloon? (2 sig figs) *
ioda

Answer:

The correct answer is 0.92 g

Explanation:

The density is defined as the mass per unit of volume:

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From the data provided:

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6 0
3 years ago
What is the density of a bar of soap with a mass of 715g, and a volume of 866cm3?
mihalych1998 [28]

Answer:

0.826 g/cm³

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4 0
2 years ago
Which has the higher percentage of aluminum, Al2O, or Al(NO3)3
Rzqust [24]

Al₂O  has a higher percentage of aluminium.

Explanation:

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Al₂O  has a higher percentage of aluminium.

learn more:

Molar mass brainly.com/question/2861244

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Heat energy is transferred by conduction whenever molecules?
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3 years ago
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