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REY [17]
3 years ago
6

An atom of nitrogen has seven electrons. Which diagram correctly represents the arrangement of these electrons?

Chemistry
1 answer:
gizmo_the_mogwai [7]3 years ago
8 0

Answer:

Option C.

Explanation:

The arrangement of electrons in their orbital follows certain rules.

The Hund's rule practically explained how electrons are distributed in their orbitals.

The Hund's rule states that electrons distributed among the orbitals of the same shell singly (without partner) before pairing occurs.

In the filling of these electrons in their orbitals, we fill in the electron without pairing first because electrons tends to repel each other before filling with the opposite spin as shown in the attached photo.

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Paul went to his friend's 2 km from his house, he used his bike and took him 9 minutes.
damaskus [11]

The average speed : 3.07 m/s

<h3>Further explanation</h3>

Given

d1 = 2 km

t1 = 9 min

d2 = 1.5 km

t2 = 10 min

Required

The average speed

Solution

Average speed = total distance : total time

total distance :

= d1+d2

= 2+1.5

=3.5 km

total time :

= t1+t2

= 9 min + 10 min

= 19 min

Average speed :

= 3.5 km : 19 min

= 0.184 km/min

= 3.07 m/s

8 0
3 years ago
How does the composition of water molecule affect its charge
kolezko [41]
It is make the molecule polar.
7 0
3 years ago
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What's a certain indicator that a molecule is polar?
qaws [65]
I think the answer is D
6 0
3 years ago
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What is the specific heat of a substance if a mass of 10.0 kg increases in temperature from 10.0°c to 70.0°c when 2,520 j of hea
LekaFEV [45]

Answer:

0.00420

Explanation:

The equation is Q=mc(T(final)-T(initial), where c is the specific heat, Q is heat supplied, m is mass, T(final) is final temperature and T(initial) is initial temperature (you'll see this written as delta T, which means change in temperature).

2520 = Q

m = 10.0kg; answer choices are in g, not kg, so multiply by 1000 to get m in g; m = 10000 g

Plug in the values you have and solve for c.

2520=(10000)(c)(70-10)

2520=600000c

c=0.0042 j/(gc)

5 0
2 years ago
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MULTIPLE CHOICE QUESTION
marishachu [46]
Mg will lose 2 valance electrons to obtain octet
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