## Period Table 'blocks'

haleyervin7
Posts: 61
Joined: Fri Sep 28, 2018 12:15 am

### Period Table 'blocks'

What exactly does it mean when an element is in the "p-block" or "s-block", etc?

Chem_Mod
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### Re: Period Table 'blocks'

We determine what block an element is based on its valence electrons. If an element has its valence electron in the p subshell, then it belongs to the p block. The s block contains elements in the first two columns while the p block contains elements in the last six columns.

Nicolle Fernandez 1E
Posts: 56
Joined: Fri Sep 28, 2018 12:25 am
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### Re: Period Table 'blocks'

The s-block are the elements on columns 1 and 2, the p-block are the elements on columns 13-18, and the d block are the elements on columns are 3-12. They are grouped by columns because elements in the same column has the same number of valence electrons, and blocks are determined by valence electrons.

Lauren Ho 2E
Posts: 70
Joined: Tue Oct 09, 2018 12:16 am

### Re: Period Table 'blocks'

For example, Potassium can be written as 1s^2 2s^2 2p^6 3s^2 3p^6 4s^1 or [Ar] 4s^1; it is part of the S block

anthony_trieu2L
Posts: 60
Joined: Fri Sep 28, 2018 12:29 am

### Re: Period Table 'blocks'

Blocks are essentially a simple way to categorize elements into their respective orbital. These categories are determined by the highest energy electrons.

Layla Manoochehri
Posts: 29
Joined: Fri Sep 28, 2018 12:28 am

### Re: Period Table 'blocks'

do we need to know these blocks for the test this week? i know he said we'd only need to know information covered until friday of week 3 but i can't really remember if we went over this quickly and i just don't remember, or if we don't need to know it for this test.