Which of the following elements would you expect to gain electrons in chemical changes? (Select all that apply.)
gold
chromium
zirconium
nitrogen
iodine
nitrogen and iodine
What is a characteristic of non metals?
isnt it metals?
metals lose electrons, nonmetals generally gain. What is iodine?
What wouldn't expect to gain electrons such as tungsten or strontium
To determine which elements would gain electrons in chemical changes, we need to consider their position in the periodic table and their tendency to gain or lose electrons.
1. Gold (Au): Gold is located in Group 11 of the periodic table, also known as the coinage metals or transition metals. Transition metals typically lose electrons to form positive ions. Therefore, gold would not be expected to gain electrons in chemical changes.
2. Chromium (Cr): Chromium is located in Group 6 of the periodic table. Its electron configuration is [Ar]3d54s1, meaning it has one valence electron in the 4s orbital and five valence electrons in the 3d orbitals. Chromium can gain electrons to fill its 3d orbitals and achieve a more stable electron configuration. Therefore, chromium is expected to gain electrons in chemical changes.
3. Zirconium (Zr): Zirconium is located in Group 4 of the periodic table. It has an electron configuration of [Kr]4d25s2, meaning it has two valence electrons in the 5s orbital and two electrons in the 4d orbitals. Zirconium can gain two electrons to achieve a stable electron configuration. Therefore, zirconium is expected to gain electrons in chemical changes.
4. Nitrogen (N): Nitrogen is located in Group 15 of the periodic table. It has an electron configuration of [He]2s22p3, meaning it has five valence electrons in the 2p orbitals. Nitrogen can gain three electrons to fill its 2p orbitals and achieve a stable electron configuration. Therefore, nitrogen is expected to gain electrons in chemical changes.
5. Iodine (I): Iodine is located in Group 17 of the periodic table, also known as the halogens. Halogens are highly reactive nonmetals that tend to gain one electron to achieve a stable electron configuration. Therefore, iodine is expected to gain electrons in chemical changes.
Therefore, the elements that would be expected to gain electrons in chemical changes are:
- Chromium (Cr)
- Zirconium (Zr)
- Nitrogen (N)
- Iodine (I)