An element X has mass no. 35 and number of neutron 18. Write atomic number and electronic configuration of X. Also, write group number, period no.and valency of X.
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Atomic no is 17(35-18)
Group is 17.
Period is 3 rd.
Valency is 1
Element is chlorine.
Group is 17.
Period is 3 rd.
Valency is 1
Element is chlorine.
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Mass no. =35
Neutrons +electrons =35
Electrons =35-18=17
Element X - clorine
Cl(2,8,7)
So,
Group - 17th as 7 valence electrons
Period - 3rd as three shells
Valency - 1
Neutrons +electrons =35
Electrons =35-18=17
Element X - clorine
Cl(2,8,7)
So,
Group - 17th as 7 valence electrons
Period - 3rd as three shells
Valency - 1
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