我们可以用氩离子。

We could use argon ion.

剩下的一些延迟消退的很慢，比如铯、碘、锶和氩。

Others decay more slowly, like some cesium, iodine, strontium, and argon.

如果它能得到另一个电子，它就能和氩一样是电绝缘。

If it could gain one more electron, then chlorine would be iso-electronic with argon.

So if we're talking about the third period, that starts with sodium and it goes all the way up to argon.

所以如果我们谈论第3个周期，它从钠开始,一直到氩。

It could be aluminum, silicone, phosphorous, sulfur, c hlorine or argon.

答案可能是铝，硅，磷，硫,氯或者氩。

If it could gain one more electron, then chlorine would be iso-electronic with argon.

如果它能得到另一个电子，它就能和氩一样是电绝缘。