Answer:
There are 5 numbers
Explanation:
First, the number must be a whole number and divisible by 4.
20^2 is 400.
And there are 4, 8, 12, 16 ,20; 5 number divisible by 4.
23^2 is already 529.
The next number divisible by 4 is 24 which is over 500.
So there are 5 numbers. They are 16, 64, 144, 256, 400.
This apparent contradiction between the chlorine ion and the sodium ion is; due to electrostatic attraction between the nucleus and the electrons.
As we know, there's a periodic trend for atomic radii in the periodic table; the trend is as follows;
- <em>Atomic radius increases down a group and reduces across the period.</em>
Elements get larger down the group and this explains the trend down a group.
- However, atomic radius decreases across a period because the more Valence electrons there are in an element, the more the electrostatic attraction between the positively charged nucleus and the negatively charged electrons.
Consequently, when Chlorine forms an ion by gaining an electron, the electrostatic attraction between its nucleus and electrons increases and the the atomic radius decreases.
On the other hand, when sodium forms an ion by losing an electron, the electrostatic attraction between its nucleus and electrons decreases and the the atomic radius increases.
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D. where is liquid water found in our solar system I think is the correct answer
(-2x^2 + x + 31) + (3x^2 + 7x -8) = ax^2+bx+c
Simplify the left side of the equation:
-2x^2 + 3x^2 + x + 7x + 31 -8 = x^2+8x+23
Now you'll see that 'a' will have to be 1 (since the coefficient for x^2 is 1)
'b' = 8 (coefficient for x)
'c' = 23 (the constant in the equation)
Add them up!
1+8+23= 32
Hope this helps!
The meaning of the words has been described below:
- Inexplicable: This means something that is puzzling or inexplainable
- Discretion: This is the application of wisdom and discernment
- Buffet: An arrangement of meals
<h3>What is the meaning of "Inexplicable?</h3>
Something that is inexplicable leaves a person puzzled about a situation or issue.
In the same vein, discretion refers to the application of wisdom when solving a difficult matter. In restaurants and parties, buffets are often used to serve meals.
Learn more about the meaning of the word, inexplicable here:
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