1
Bromine will gain one electron to become Br-
Bromine gain one electron and become Br-.
Selenium will gain two electrons and arsenic will gain three electrons
Selenium can gain 1 electron or loss 2, 4, 6 electrons.
2 like oxygen
Bromine will gain one electron.
Bromine will gain one electron to become Br-
Bromine must gain one electron
Bromine gain one electron and become Br-.
Boron can lose 3 electrons from its valence shell that is 2 in 2s & 1 in 2p sub-shell, wheras it cannot gain electron b'coz of its electropositive nature & it has less electron affinity.
4
Selenium will gain two electrons and arsenic will gain three electrons
In phosphene it gain 4 electrons. Phosphate lose 4 electrons
How many electrons does Bromine have
Selenium may lose 2, 4 or 6 electrons and may gain 2 electrons.
None.Calcium loses 2 electrons to form an ion.
Selenium can gain 1 electron or loss 2, 4, 6 electrons.