Name the group and period of the element having atomic number 18 and26 what are the possible valencias of the above element
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Answer:
The element with atomic number with 18 is argon and with 26 is iron
Explanation:
Argon
group= Grou Nobel gases because it is stable and unreactive or not interested in bonding its valence shell is full which is 8.
period = when you put those electron at their suited place there is only three shell and number of shells tells us the period number.
iron
group= VIIIb which is a transition metal and the number of electrons in the valance shell tell us the group number.
period = as i mentioned earlier period number is based on number of shells which is 4 .
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