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Pavel [41]
2 years ago
8

Use the periodic table to answer the questions below.

Chemistry
2 answers:
MrRa [10]2 years ago
4 0

Answer:

Second option.

Explanation:

Nitrogen is the first element of group 15, and its number atomic is 7, so, in its neutral state, it has 7 electrons.

By Linus Pauling diagram (see figure), the electronic distribution will be:

1s^{2} 2s^{2} 2p^{3}

The distribution follows the arrows, from the less energetic subshell for the most energetic one. The subshell <em>s</em> has an only magnetic number, so only one orbital to put electrons. Subshell <em>p</em> has 3 magnetic numbers, so 3 orbitals to put electrons.

To put the electrons, we have to follow Hund's Rule: fulfill the orbitals which only one<em> spin</em>, until all orbitals have this <em>spin</em>, so continue, with the other <em>spin</em>, until finishing the electrons on that subshell. <em>Spin</em> is the rotation of the electron, and it can be +1/2 or -1/2.

So, for subshell 2p, how there are only 3 electrons, all three will be put with the same <em>spin</em> (+1/2, up arrow). If there was one more electron, it would be filled in the first orbital with the <em>spin</em> -1/2, down arrow.

Romashka-Z-Leto [24]2 years ago
3 0
B ............ is the answer,
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Valentin [98]

Answer:

South American

Explanation:

When you look at a map of plates, only South American forms a boundary with the African plate out of those specific plates

6 0
3 years ago
Read 2 more answers
An empty beaker weighs 25.91 g. When completely filled with water, the beaker and its contents have a total mass of 333.85 g. Wh
Finger [1]

Answer:

The beaker holds 307.94  mL

Explanation:

As we know that the volume that beaker hold is the volume of water that occupied by it.

For this first we have to find mass of the water in the beaker

This can be calculated by the subtraction of beaker's weight from the weight of beaker and water.

     weight of water (m) = total weight - weight of beaker

Empty weight of beaker = 25.91 g

Weight of beaker with water = 333.85 g

Weight of water = 333.85 - 25.91 = 307.94 g

Density of water = 1 g/mL

We have

      Mass = Volume x density

      307.94  = Volume x 1

      Volume = 307.94  mL

The beaker holds 307.94  mL

3 0
3 years ago
What is the name of SnF2
Inessa [10]

Answer:

Tin (II) Fluoride......

7 0
3 years ago
Yes thank you I love and appreciate this so much woooo
Natali5045456 [20]
Thank you for the points

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4 0
3 years ago
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9. ______________ Consists of the Sun and everything that orbits the Sun
Rudiy27

Answer:

9.solar system

10.comet

11.gravity

12.earth and saturn

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