[R] list of lists, is this element empty

Ragia Ibrahim
2014-12-20T15:58:19Z

Hello,
Kindly I have a list of lists as follow
x
[[1]]
[1] 7

[[2]]
[1] 3 4 5

as showen x[[3]] does not have a value and it has NULL, how can I check on this
how to test if x[[3]] is empty.

thanks in advance
Ragia