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1. A main group element with the valence electron configuration 3s 1 is in perio

ID: 1030039 • Letter: 1

Question

1. A main group element with the valence electron configuration 3s1 is in periodic group ____ It forms a monatomic ion with a charge of _____

2. If an element with the valence configuration 4s23d8loses 2 electron(s), these electron(s) would be removed from the _______ subshell(s). (choices are s,p,d,f or s+p, s+d, p+d)

3. An element with the valence electron configuration 5s25p4 would form a monatomic ion with a charge of _____
In order to form this ion, the element will ____ (lose or gain) ____(#) of electron(s) from/into the ______ subshell(s).

Explanation / Answer

ANS1. ELEMENT WITH CONFIGURATION 3S1 IS SODIUM. SO IT IN GROUP 1 AND FORMS ION WITH CHARGE +1.

ANS2. ELEMENT IS Ni AND AFTER REMOVAL OF 2e IT WILL BE REMOVED FORM s AND CONFIGURATION WILL BE 3d8

ANS 3. ELEMENT IS Te . IT FORMS ION OF -2. LOSES 2 ELECTRON ONE FROM s AND ONE FROM p