Identify the element with the given charge and ionic electron configuration:
a) +3 [He]2s2
b) +5 [Kr]4d10

Question

Identify the element with the given charge and ionic electron configuration:
	a)	+3	[He]2s2
	b)	+5	[Kr]4d10

anonymous · Answer

@ganeshie8 can you help?

anonymous · Answer

is it Nitrogen and Iodine

anonymous · Answer

Hi. That is electronic configuration. As they start with[He], they have made the electron configuration for helium, which has a total of 2 electrons, which then plus 2 from that 2s2, gives a total of 4. Generally, when you are given a value of charge. That charge value determines the group of the element and this element must be in group 5 to lose 3 electrons to finally get 4 electrons.  That would be nitrogen because its atom has 7electron, which minus 3 gives 4.

anonymous · Answer

For your second one, krypton has a total of 36 protons, which plus 10 gives 46. But with this one, I cannot really determine which element it is... Did you copy your b) correctly?