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Gnoma [55]
3 years ago
13

Can someone help me to answer the questions 8 and 9

Chemistry
1 answer:
Elena-2011 [213]3 years ago
3 0
Idk it's stupid do it yourself
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Using VSEPR theory which of the following would be the correct shape for nitrogen trifluoride?
RUDIKE [14]

Answer:

trigonal pyramidal

Explanation:

In NF3, the nitrogen atom is sp3 hybridized. Now we must remember that according to the VSEPR theory, the number of electron pairs in the valence shell of the central atom in a molecule determines its shape.

Here, the nitrogen atom is the central atom and its outermost shell is surrounded by four electron pairs - one lone pair and three bond pairs. This means that it has a tetrahedral electron pair geometry.

However, due to the lone pair, the three fluorine atoms are arranged in a  trigonal pyramidal geometry. Hence the correct shape of the molecule is trigonal pyramidal.

6 0
3 years ago
What does the number of valence electrons determine?
N76 [4]

Valence electrons are the electrons in the outermost shell of an element on the periodic table. Atoms want to be able to have a full outer shell and they can share or trade electrons in order to achieve this. Valence electrons are also super super important in chemical reactions. The number of valence electrons determines what group that specific atom or element is in on the periodic table. This affects the reactivity of the element.

4 0
3 years ago
भारत के एक ही राज्य में लगातार सबसे लंबे समय तक
IgorLugansk [536]

Answer:

C

Explanation:

6 0
3 years ago
Sound travels most quickly through? a gas, liquid. Solid
aleksley [76]

Answer:

solids

Explanation:

through solids because the molecules are closer together

4 0
3 years ago
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Earth rotates west to east. Is this true or false? I want to say false, but I'm not sure.
777dan777 [17]
The answer is false because it goes in a full 360 degree circle 
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