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andreyandreev [35.5K]
2 years ago
5

Which statement is true about elements in a period on the periodic table?

Chemistry
2 answers:
frozen [14]2 years ago
5 0

Answer:

they have differnet properties that repeat across the next period

Explanation:

lara31 [8.8K]2 years ago
3 0

Answer: They have different properties that repeat across the next period

Explanation:

Elements are distributed in groups and periods in a periodic table.

Elements in period are arranged in order of increasing atomic numbers, thus have different valence electrons and thus have different properties.

Elements that belong to same groups will show similar chemical properties because they have same number of valence electrons.

Thus as the elements are arranged such that the elements with similar chemical properties occur after a regular interval, it is true that the elements in the period have different properties that repeat across the next period.

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Pls help asap!!!!
AVprozaik [17]

Answer: The pressure of the He is 2.97 atm

Explanation:

According to Dalton's law, the total pressure is the sum of individual pressures.

p_{total}=p_{N_2}+p_{O_2}+p_{He}.

Given : p_{total} =total pressure of gases = 6.50 atm

p_{N_2} = partial pressure of Nitrogen = 1.23 atm

p_{O_2} = partial pressure of oxygen = 2.3 atm

p_{He} = partial pressure of Helium = ?

putting in the values we get:

6.50atm=1.23atm+2.3atm+p_{He}  

p_{He}=2.97atm

The pressure of the He is 2.97 atm

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3 years ago
Which arrow or arrows represent reactions that demonstrate a conservation of mass and energy? Explain your answer
rewona [7]
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2 years ago
How does the shape of a molecule affect its function?
sesenic [268]
B. the shape of a molecule determines its properties and interactions
7 0
2 years ago
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denpristay [2]
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