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Arlecino [84]
3 years ago
5

A radioactive element X with atomic number 88 and mass number 226 emits in succession:1)alpha particle

Physics
1 answer:
Alexus [3.1K]3 years ago
5 0
1) alpha particle, the element Radium undergoes alpha decay, releasing an alpha particle.
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Debbie plotted a graph to show how the mass of aluminium rivets affected the distance the cup moved down.
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Answer:

26

Explanation:

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Which of the following is an agent of socialization?
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<span>Socialization is a way of interacting to other people and in return, gaining insights as well as part of learning process. Above choices are all agents of socialization so that is letter D: all of the above. A grandparent can teach you lessons of his experiences in life since he is older than you. Television is a medium to be able to know how to interact with people by basing on it and learning with whatever is shown. School is an area where different people of different ages convene and learn together. This give you the opportunity to learn from different personalities of ages and experiences.</span>
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3 years ago
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Using the equation zeff=z−s and assuming that core electrons contribute 1.00 and valence electrons contribute 0.00 to the screen
DIA [1.3K]
Thank you for posting your question here at brainly. Below is the solution. I hope the answer will help. 

<span>Cl^- 1s^2 2s^2p^6 3s^2 3p^6 1s^2 2s^2p^6 S = 10; 3s^2 3p^6 S = 0 </span>
<span>Zeff = Z-S = 17- 10 =7 </span>
<span>K^+ 1s^2 2s^2p^6 3s^2 3p^6; 1s^2 2s^2p^6 S = 10; 3s^2 3p^6 S = 0 </span>
<span>Zeff = Z-S = 19- 10 = 9 
</span>
S = 2 + 6.8 + 2.45 = 11.25 
<span>Zeff(Cl^-) = 17 – 11.25 = 5.75 </span>
<span>K^+ 1s^2 2s^2p^6 3s^2 3p^6 same S as for Cl^- but Z increases by 2 hence </span>
<span>Zeff(K^+) = 19 - 11.25 = 7.75</span>
5 0
3 years ago
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Olenka [21]

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Explanation:

5 0
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Question 6. B) and c)
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The formula for both is v(t) = v0 + a*t

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c) 14 = 2 + 1.5*t => t = (14-2)/1.5 = 8 seconds
4 0
3 years ago
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