diatonic
2 Half steps
Whole, whole, half, whole, whole, whole, half.WWHWWWH
The two intervals used to build major and minor scales are half steps and whole steps (also called minor seconds and major seconds). In the harmonic minor scale, an augmented second is used between scale degrees 6 and 7.
It's the same as a minor 3rd, so it has three half steps, or one whole step and one half step
diatonic
Four half steps, or two whole steps.
I will assume you are talking about a major scale on a piano, and the scales other than C major. (Similar answer for minor scales other than A minor.)A major scale sounds the way it does because of the pattern of half-steps and whole-steps. A C scale has half-steps between E and F; and between B and C. But suppose you start on a different note--D, for example. D to E is a whole step (so far so good). for the second to third, you need another whold step, and that takes you to F sharp. After the third is a half-step, shich puts you on G natural, then whole to A, whole to B; but from the sixth to seventh, a whole step puts you an C sharp. Finally, the half-step back to the root puts you on D natural.
2 Half steps
Whole, whole, half, whole, whole, whole, half.WWHWWWH
one whole, one half
The two intervals used to build major and minor scales are half steps and whole steps (also called minor seconds and major seconds). In the harmonic minor scale, an augmented second is used between scale degrees 6 and 7.
It's the same as a minor 3rd, so it has three half steps, or one whole step and one half step
Starting from the bottom: Whole step, whole step, half step, whole step, whole step, whole step, half step. The best way to think of it is all whole steps except for between the 3rd and 4th notes and the 7th and 8th notes.
Whole steps and half steps in a sequential order:WWHWWWH
Whole whole half whole whole whole half. These steps will create a major scale wherever you start on a piano, unless you start too high to get to the end of the sequence.
a whole step.