00:01
So here in this problem, it gives us some information about an element, and it wants us to find it on the periodic table.
00:08
So the first problem, it tells us that it is in the second period.
00:14
So second period right here.
00:17
So we're looking at just the second row.
00:20
And then it wants us, and then it says it's in group 4a, or sometimes referred to as group 14.
00:26
And we can see group 14 is already right here.
00:29
Or since it says group 4a, this is, that's not including the transition metals.
00:34
So one, two, three, four, four right here.
00:39
So if it's in the second, if it's in the second period, and it's in group 14, that means it's c or carbon.
00:47
So that means the first one is carbon c.
00:52
Okay, we'll just erase this and do the next one.
00:55
Oh, that erases the whole thing.
00:59
So the first one is carbon.
01:06
The next one tells us that it is a noble gas.
01:09
And it's also in the first period.
01:12
So first period, as we can see, is right here, the first row.
01:17
And it's a noble gas...