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hram777 [196]
3 years ago
13

An atom has atomic number 17, in which group and in which period is this atom located?

Chemistry
2 answers:
Aliun [14]3 years ago
7 0

Answer:

Group 7 - Period 3

Explanation:

AfilCa [17]3 years ago
6 0

Explanation:

period =3

Group=7

it is cl2

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3 years ago
When radium-226 (atomic number-88) decays by emitting an alpha particle it becomes _____.
topjm [15]

Answer:

d. Radon-222

Explanation:

²²⁶₈₈Ra → ²²²₈₆Rn  + ⁴₂He

Alpha particle is a helium nucleus with mass number 4 and atomic number 2. According to the law of conversation of mass, the sum of the mass number and atomic number must be equal on both side of the reaction.  

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3 0
3 years ago
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nordsb [41]

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8 0
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