Selenium may lose 2, 4 or 6 electrons and may gain 2 electrons.
Selenium should gain two electrons and lose six electrons to achieve a noble gas electron configuration.
It will lose 2 to form Sr2+
In forming compounds, atoms are engaged in either gaining or losing electrons. They may also share electrons, but that is also a form of gaining or losing electrons.
Strontium, element with atomic number 38, will lose 2 electrons to form a stable ion as it tends to lose electrons to attain a noble gas configuration.
Tungsten generally loses electrons when forming bonds, it is a metal
Selenium can gain 1 electron or loss 2, 4, 6 electrons.
Selenium typically gains two electrons to achieve a stable electron configuration, forming the Se2- ion. Arsenic typically loses three electrons to achieve a Noble Gas electron configuration and forms the As3+ ion.
The oxidation states of selenium are: 1 to 6 and -1, -2.
Some atoms lose electrons, some gain electrons, and some share electrons depending on what elements are involved and what compound is forming.
An atom of selenium will gain two electrons to achieve an octet because it has six valence electrons in its outer shell. By gaining these two electrons, selenium will have a total of eight electrons in its outer shell, fulfilling the octet rule.
Sulfur can both gain and lose electrons when forming ions. It can gain two electrons to form a sulfide ion (S2-) or lose two electrons to form a sulfide ion (S2+).
Selenium needs to gain two electrons to achieve a stable electron configuration. By gaining two electrons, selenium will have a complete outer energy level (valence shell), which is the most stable configuration for an atom.
se and sometimes gain electrons. Atoms with eight valence electrons do not easily lose electrons
Selenium should gain two electrons and lose six electrons to achieve a noble gas electron configuration.
Beryllium would tend to lose its two electrons when forming a bond because it is easier to lose its two valence electrons rather than gain an additional five in order to obtain a full outer shell.
It will lose 2 to form Sr2+
Krypton can gain a maximum of 2 electrons to achieve a stable octet configuration, forming the Kryptonide anion. It does not typically lose electrons.