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gtnhenbr [62]
3 years ago
9

(c) When a radioactive isotope decays it can produce beta particles.What is a beta particle?​

Chemistry
1 answer:
jekas [21]3 years ago
6 0

Explanation:

Beta particles are of two types - negative beta particles or negatrons and positive beta particles or positrons which are both formed from some nuclear processes within the nucleus.

A negatron is like an orbital electron but it has more energy compared to an orbital electron.

A positron is essentially the same as a negatron except in the charge it carries. A positron carries positive charges.

A beta particle is very light and has much range through matter.

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Please show work:<br> Question below
ozzi

Answer:

b) 2.0 mol

Explanation:

Given data:

Number of moles of Ca needed = ?

Number of moles of water present = 4.0 mol

Solution:

Chemical equation:

Ca + 2H₂O     →      Ca(OH)₂ + H₂

now we will compare the moles of Ca and H₂O .

                          H₂O        :        Ca                

                             2           :        1

                             4.0           :       1/2×4.0 = 2.0 mol

Thus, 2 moles of Ca are needed.      

         

3 0
3 years ago
4. Which is not an example of unbalanced forces acting on an object
natita [175]

Answer:

did you you know

Explanation: thcco lot iof the

5 0
3 years ago
List the numbers of protons, neutrons, and electrons in Chlorine-18.
OLEGan [10]
17 protons 17 electrons 18 neutrons
7 0
4 years ago
Why do elements form compounds? What elements never form compounds and why?
Alja [10]

Answer:

Elements form compounds to satisfy the octet rule. Noble gasses never form compounds because they already satisfy the octet rule.

Explanation:

The octet Rule is the theory that an element will attempt to gain a valence of 8 by binding with another element in it's vicinity. This can happen in a variety of ways, but the main thing to remember is that they will take the "shortest path" to 8(I.e an element will sometimes lose an electron or 2 if it has a valence 1 or 2 to loop back around to 8, while an element with a valence of 6 or 7 will attempt to gain 2 or 1 electrons).

Valence of elements can be counted by group in the image attached.

Group 1 has a valence of 1, Group 2 has a valence of 2, then we move to group 13 which has a valence of 3, group 14 has a valence of 4, group 15 has a valence of 5, group 16 has 6, group 17 has 7, and group 18 is the noble gasses which have 8.

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3 years ago
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Elza [17]
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