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Anestetic [448]

3 years ago

7

How are metals and nonmetals similar

1 answer:

Elza [17]3 years ago

6 0

Answer:

As compared to metals, they have low density and will melt at low temperatures. The shape of nonmetals cannot be changed easily because they are brittle and will break. Elements that have properties of both metals and nonmetals are called metalloids. They can be shiny or dull and their shape is easily changed.

Explanation:

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The atomic number of fluorine is 9. How many electrons does an ion of fluorine have if it is represented by the symbol shown bel

Irina-Kira [14]

See charge on ion is -1 .

Hence it has taken 1 electron

Now first look at EC of Fluorine(F)

$\\ \bull\sf\dashrightarrow 1s^22s^22p^5$

Now one electron added .hence no of electrons is 10now

Look at the EC

$\\ \bull\sf\dashrightarrow 1s^22s^22p^6$

Or

$\\ \bull\sf\dashrightarrow [He]$

Option C is correct.

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2 years ago

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Which of the following is true about the elements on the Periodic Table? There may be 1 or more correct answers.

nlexa [21]

Answer: 1. Block

2. True ( I'm unsure. He arranged it according to mass, but he is credited for the periodic table)

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4. technetium

5. Alkaline earth metals

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7. False

8. Not true: generally decreases as atomic number increases within a period

9. Argon

10. Four

11. False

12. False

Explanation:

4 0

3 years ago

One sugar produced by photosynthesis is_________.

iVinArrow [24]

Cellulose is the answer.

7 0

3 years ago

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?cual es el tiempo de<br>onda con 6<br>oscilaciones.?

Setler79 [48]

Answer:

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Explanation:

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7 0

3 years ago

Stolb23 [73]

Answer:

There are 17.64% students received B+ grades.

Explanation:

It is given that,

Total number of students in chemistry class is 17

We need to find the percentage received by B+.

Number of students having B+ grades are 3 (from graph)

Required percentage = $P=\dfrac{3}{17}\times 100=17.64\%$

So, there are 17.64% students received B+ grades.

8 0

3 years ago