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3 years ago

Why phosphorus forms 3 bonds in molecule such as PH3 and PCl3-

Chemistry

2 answers:

gregori [183]3 years ago

6 0

Phosphorous has three lone electrons that need pairing. Similar to how carbon has 4 lone electrons, and forms CH4

antoniya [11.8K]3 years ago

4 0

Answer:

The 3p orbital of the element will be completely filled if it forms 3 bonds with other atoms.

Explanation:

Phosphorus is a element of 15 group and 3 period.

The electronic configuration of the phosphorous is:

1s²2s²2p⁶3s²3p³

<u>The 3p orbital of phosphorous is singly filled by 3 electrons and if it shares more 3 electrons with other atom, its valence shell will be completely filled which makes it more stable. Hence, phosphorus makes 3 bonds like in PH₃ and PCl₃ .</u>

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True or False ? Endothermic reactions are characterized by net absorption of thermal energy from its surroundings which leads to

Artemon [7]

False

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3 years ago

How many grams of oxygen are required to react with 13.0 grams of octane (C8H18) in the combustion of octane in gasoline?

egoroff_w [7]

Grams of oxygen are required to react with 13.0 grams of octane (C8H18) in the combustion of octane in gasoline is 45.5g

Octane is a hydrocarbon which burns in gasoline in presence of oxygen according to the given balanced chemical equation,

2C₈H₁₈ + 25O₂------> 16CO₂ + 18H₂0

Molar mass of octane = 114.23g/mol

Molar mass of Oxygen = 32g/mol

According to the stiochiometry of the balanced equation the mole ratio of Octane and Oxygen is 2:25

2 mole of octane needs 25 mole of oxygen

1 mole of octane needs 12.5 moleof oxygen

114.23g of octane needs 400g of oxygen

13g of octane needs 45.5g of oxygen

Mass of oxygen needed =45.5g

Hence, the Mass of oxygen needed is 45.5g for the combustion of octane in gasoline.

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1 year ago

Scientists often investigate alternative explanations for the data and observations presented, even once a hypothesis has been t

worty [1.4K]

Answer:

Explanation:

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3 years ago

el diametro de la tierra en el ecuador es de 7926381 ml. redondee este numero a tres cifras significativas y expresel en notcion

elena55 [62]

7.93 x 10⁶mi

Explanation:

Significant figures are numbers that shows how accurate and precise scientific measurements are reported.

Here are some rules to identifying them;

All non-zero digits are significant
zeros between digits are significant
leading zero before a decimal are not significant
trailing zero after a decimal are significant
trailing zero before a decimal point are significant.

The number 7926381 has 7 significant numbers.

To write in the scientific notation, we simply express as N x 10ᵃ

N is the number of significant number

a is the exponent

N here is 7.93

a here is 6

7.93 x 10⁶mi

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Significant figures brainly.com/question/2746374

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2 years ago

In general, if a body of mantle (source) rock is subjected to partial melting, the magma that is produced is expected to be ____

Yanka [14]

Answer: D

Explanation:

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3 years ago