OVER 9000
Beryllium tends to lose two electrons to form a 2+ cation.
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+).
Potassium will lose 1 electron to form a 1+ ion.
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.
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.
Beryllium typically loses electrons to form a +2 ionic charge. It is easier for beryllium to lose its outermost electrons than to gain new ones due to its small atomic size.
Beryllium tends to lose two electrons to form a 2+ cation.
The electro negativity of O is higher. So Beryllium loses 2 electrons.
Beryllium will lose 2 electrons to satisfy the octet rule (to fill its outer shell).
Beryllium has the electronic configuration 2, 2, so it is likely to lose two electrons, giving it the Helium configuration. However, in practice, beryllium compounds have a high degree of covalent character as the beryllium ion is small and very polarising.
Some atoms lose electrons, some gain electrons, and some share electrons depending on what elements are involved and what compound is forming.
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 may lose 2, 4 or 6 electrons and may gain 2 electrons.
Nether. (It should make a cation, but it's too small.)
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.