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2 years ago

7

How many electrons get given when elements combine

2 answers:

klio [65]2 years ago

7 0

Answer:

When two atoms have shared electrons, it is not distinguishable from what atom they are because they are shared in the same orbit, it is called a covalent bond.

Step-by-step explanation:

Atoms in a covalent bond share one or more electrons in the last of their orbitals, the number of electrons in the last orbital will depend on the element in question.

icang [17]2 years ago

7 0

Answer:

8

Step-by-step explanation:

The octet rule refers to the tendency of atoms to prefer to have eight electrons in the valence shell. When atoms have fewer than eight electrons, they tend to react and form more stable compounds

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Find the coordinates of the midpoint of segment GH with endpoints: G(-2, -8) and H(-3, -12).

Musya8 [376]

Answer:

midpoint = (-2.5 , - 10)

Step-by-step explanation:

midpoint =( ((x1 + x2)/2) , ((y1+y2)/2)) )

= ( ((-2 + -3)/2) ,(( -8 + -10)/2) )

= ( -2.5 , -10)

6 0

3 years ago

Cos(−θ)=√3/3, sinθ<0

Delicious77 [7]

Answer:

$\sin\theta=-\frac{\sqrt{6}}{3}$

Step-by-step explanation:

The given trigonometric equation is $\cos(-\theta)=\frac{\sqrt{3} }{3}$ .

We can either use the Pythagorean identity or the right angle triangle to solve for $\sin\theta$ .

According to the Pythagorean identity,

$\cos^2\theta+\sin^2\theta=1$

Recall that, the cosine function is an even function, therefore

$\cos(-\theta)=\cos(\theta)$

$\Rightarrow \cos(\theta)=\frac{\sqrt{3} }{3}$ .

We substitute this value in to the above Pythagorean identity to get;

$(\frac{\sqrt{3}}{3})^2+\sin^2\theta=1$

$\Rightarrow \frac{3}{9}+\sin^2\theta=1$

$\Rightarrow \sin^2\theta=1-\frac{3}{9}$

$\Rightarrow \sin^2\theta=\frac{6}{9}$

$\Rightarrow \sin\theta=\pm \sqrt{\frac{6}{9}}$

$\Rightarrow \sin\theta=\pm \frac{\sqrt{6}}{3}$

But we were given that,

$\sin\theta\:$ , so we choose the negative value.

$\Rightarrow \sin\theta=-\frac{\sqrt{6}}{3}$

The correct answer is B

7 0

3 years ago

What is the formula for the following geometric sequence? -5, -10, -20, -40, ... an = -5 · 2n - 1 an = -5 · (-2)n - 1 an = -2 ·

vazorg [7]

$-5 * 2^{n-1}$

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3 years ago

URGENT!!! I WILL GIVE BRAINLIEST!

Helen [10]

Answer:

b

Step-by-step explanation:

5 0

4 years ago

Read 2 more answers

612.00 in scientific notation

FinnZ [79.3K]

612.00 in scientific notation is 6.12×10^2

6 0

3 years ago