1A) The 4s subshell has the highest n value. However, the 3d subshell is the hig

Question

1A) The 4s subshell has the highest n value. However, the 3d subshell is the highest energy subshell since the 3d orbitals have higher energy than 4s orbitals. Since two electrons are lost, the first electron is lost from the 4s subshell and the second electron is lost from the 3d subshell. Hence, the answer is 4s, 3d subshells.

1B) The element has 3 electrons in the 3p subshell. The element can form a monoatomic ion with charge -3. It is easy to gain three electrons rather than lost three electrons; hence, the ion is formed by gaining electrons. Since the 3p orbitals are the valence orbitals, electrons are gained in the 3p orbitals.

2A) The valence electrons are in 5s and 5p orbitals. The number of valence electrons in the 5p orbitals is 4. The element requires 2 more electrons to fill the octet and is therefore in Group VIA (old period table) or Group 16 of the modern periodic table.

It is easy to gain 2 electrons rather than lose 4 electrons; hence, the ion formed will have 2 units of negative charge, i.e, -2 corresponding to gain of 2 electrons.

2B) The outer electron is in 3s orbital. The lone electron in the 3s orbital can be easily formed to form a positive ion. Hence, the element is in Group 1 of the modern periodic table.

Since only one electron is lost, the element will form an ion with charge +1.

3A) The outer electron is in the 3p orbital. The lone electron in the 3p orbital as well as the two electrons in the 3s orbital can be lost to form an ion with charge +3.

In order to form the ion, the neutral atom will lose electrons from the 3s and 3p subshells.

3B) It is easy to gain 2 electrons to complete the octet; hence, the element will gain two electrons to form an ion with charge -2.

As noted earlier, electrons are gained and these electrons go into the 3p subshells.

Explanation / Answer

Use the References to access important values if meeded for this question Enter the type of subshell affected by the gain or loss of electrons. DO NOT enter the specific subshell. For example: If electrons are added to the 3p subshell, enter p. If electrons are lost from the 4s and 3d subshells, enter s+d A. If an element with the valence configuration 4s 3d10 loses 2 electron(s), these electron(s) would be removed from the subshlls B. An element with the valence electron configuration 33p would form a monatomic ion with a charge of In order to form this ion, the element will (lose/gain) electron(s) from/into the subshell(s) Submit Answer Retry Entire Group more group attempts remaining Next Email Instructor Save and Exit 12

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