The Lenovo N20 Chromebook has a better Wi-Fi standard than most portable PCs of a comparable age and spec to it. This portable PC has an 802.11n WiFi standard, whereas most laptops of this spec and age have an 802.11g WiFi standard. This Lenovo notebook PC also have 802.11a and 802.11ac and 802.11b WiFi standards.
An 802.11n WiFi standard is in fact the best Wi-Fi standard amongst all laptops that are a similar age to the N20 Chromebook.
Amongst similar types of portable PC the worst Wi-Fi standard is 802.11a.