What do elements in the first two columns of the periodic table have in common

Determine the electron-group arrangement, molecular shape, and ideal bond angle for the following molecule: PH3 Electron-group a

Alecsey [184]

Answer:

The molecular shape and ideal bond angle of the $PH_{3}$ is trigonalbipyramidal and $109.5^{o}$ respectively.

Explanation:

The structure of $PH_{3}$ is as follows.(in attachment)

From the structure,

Phosphor atom has one lone pair and three hydrogens are bonded by six electrons.

Therefore, total electrons invovled in the formation $PH_{3}$ is eight.

Hence, four electron groups which indicate the tetrahedral shape. But one pair is lone pair i.e, present on the phosphor atom.

Therefore, ideal geometry of the $PH_{3}$ molecule is <u>Trigonalbipyramidal.</u>

The ideal angle of trigonalbipyrmidal is $109.5^{o}$ .

All three bonds of P-H has $109.5^{o}$ .

Therefore, ideal bond angle is <u> $109.5^{o}$ .</u>

5 0

3 years ago

Which term defines a type of oxygen that forms a protective layer miles above the earth A. Fossil fuel B. Smog C. Pollution D. O

sukhopar [10]

The answer is a fossil fuel.

5 0

3 years ago

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What quantity of copper is deposited by the same quantity of electricity that deposited 9g of aluminum

klio [65]

Answer:

Mass of copper deposited = 31.75 g

Explanation:

According to Faraday's second law of electrolysis, when the same quantity of electricity is passed through different electrolytes, the relative number of moles of the elements deposited are inversely proportional to the charges on the ions of the elements.

From this law, it can be seen that the higher the charge, the lower the number of moles of a given element deposited.

Number of moles of aluminium in 9 g of aluminium = mass / molar mass

Molar mass of aluminium = 27 g

Number of moles of aluminium = 9/27 = 1/3 moles

Charge on aluminium ion = +3

3 moles of electrons will discharge 1 mole of aluminium,

1 mole of electrons will discharge 1/3 moles of aluminium

Number of moles of electrons involved = 1 mole of electrons

Charge on copper ion = +2

1 mole of electrons will discharge 1/2 moles of copper.

Mass of 1/2 moles of copper = number of moles × molar mass of copper

Molar mass of copper = 63.5 g

Mass of copper deposited = 1/2 × 63.5 = 31.75 g

3 0

3 years ago

Which statement correctly compares the sun and planets? A. Planets have an atmosphere; the sun does not. B. Planets gives off en

likoan [24]

Answer:

c

Explanation:

because the sun is at the center of the universe the planet orbit the sun its basically a simple answer so if you need more help im right here

8 0

3 years ago

Please help me I need to finish before my class is over

solniwko [45]

Number 3 is D

Number 4 is B

Number 5 is B

I think

6 0

3 years ago

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