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8_murik_8 [283]
2 years ago
7

Atoms of which of the following elements are largest? A: Na OOOO

Chemistry
1 answer:
elena-14-01-66 [18.8K]2 years ago
5 0

Answer:

yes answer os Na because it's electronic configuration is 1s^2,2s^2,2p^6,3s^1

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John is outstanding forward on his club select soccer team. He is know for his ball control and speed. After a game he often mak
natima [27]

Answer:

This self evaluation helps them to better his sport.

Explanation:

This is the right way to evaluate the performance of John because this sketch shows him the way he perform in the match. Due to this sketch he can better his performance and remove all the mistakes he had done in the match which results in better performance of John in the next match. This self evaluation helps them to better his sport and got new chances in order to select for a better club or national soccer team.

4 0
2 years ago
How fast must a 56.5-g tennis ball travel in order to have a de Broglie wavelength that is equal to that of a photon of green li
nikklg [1K]

Answer:vv

v=2.17\times 10^{-26}\ m/s

Explanation:

The expression for the deBroglie wavelength is:

\lambda=\frac {h}{m\times v}

Where,  

\lambda is the deBroglie wavelength  

h is Plank's constant having value 6.626\times 10^{-34}\ Js

m is the mass of = 56.5\ g=0.0565\ kg

v is the speed.

Wavelength = 5400 Å = 5400\times 10^{-10}\ m

Applying in the equation as:-

5400\times 10^{-10}=\frac{6.626\times 10^{-34}}{0.0565\times v}

v=\frac{331300000}{10^{34}\times \:1.5255}\ m/s

v=2.17\times 10^{-26}\ m/s

7 0
3 years ago
How many nonmetals are there in the boron group?
OLga [1]
The answer is going to be there isn't any nonmetals. hope that helped
5 0
3 years ago
A neutral atom becomes a negatively charged ion by __________ electrons
Inessa [10]
A neutral atom becomes a negatively charged ion by accepting electrons.
For example:
F + e⁻ → F⁻
S + 2e⁻ →S²⁻
8 0
3 years ago
A flexible weather balloon contains helium gas at a volume of 855 L. Initially, the balloon is at sea level, where the temperatu
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Answer: The change in the volume of the balloon is 144.4L

Explanation: Please see the attachments below

8 0
2 years ago
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