Calcium will lose two electrons to gain the noble gas configuration of Argon.
loses 2 electrons to achieve a noble gas configuration
Boron must give up 3 electrons in order to achieve a noble-gas electron configuration.
in order to attain the nearest noble gas configuration.
Phosphorus has to gain a total of 3 electrons to achieve a noble gas configuration. You can find this for any non-metal because the last digit of its group number is the number of valence electrons it has. For example Phosphorus has 5 and Sulfur has 6. In order to achieve a noble gas electron configuration, you must have 8 valence electrons, so phosphorus must gain 3.
Atoms gain, lose or share electrons and try to attain noble gas configuration.
loses 2 electrons to achieve a noble gas configuration
It needs to lose to in order to have the same number of outer electrons as Argon. The Noble gas configuration of [Ar]4s2 confirms this.
nitrogen has 5 valence electrons. It should gain 3 electrons to achieve a noble gas configuration.
Silver needs 7 more electrons to reach a "pseudo-noble gas" configuration.
Two.
three
Nitrogen has to gain three electrons
Boron must give up 3 electrons in order to achieve a noble-gas electron configuration.
carbon has to gain or lose 4 electrons to gain noble gas configuration.
in order to attain the nearest noble gas configuration.
it has to gain 3
Phosphorus has to gain a total of 3 electrons to achieve a noble gas configuration. You can find this for any non-metal because the last digit of its group number is the number of valence electrons it has. For example Phosphorus has 5 and Sulfur has 6. In order to achieve a noble gas electron configuration, you must have 8 valence electrons, so phosphorus must gain 3.