ATOMIC NUMBER IS EQUAL TO NUMBER OF PROTONS PRESENT IN ITS NUCLEUS.
ATOMIC NUMBER IS DENOTED BY Z.
FOR H-ATOM,Z=1
FOR He-ATOM,Z=2
FOR Na-ATOM,Z=11
--->For different elements,the value of Z is different.
--->Z is also equal to the no. of electrons in an atom but it is not always true because in case of ions(anions and cations)the no. of electrons are not equal to no. of protons.

1) Draw the circle of radius 6cm with center O

2) Draw a radius and extend it outside till P such that OP = 10cm

3) Draw a perpendicular bisector on OP to intersect at M

4) With OM or OP as radius, draw a circle with center M to intersect the previous circle at A and B

5) Join PA and PB

PA and PB are the required tangents.

1) Draw the circle using the bangle

a) Draw 2 chords inside the circle and then draw their perpendicular bisectors to intersect at O

b) O is the center of the circle

2) Draw a radius and extend it outside till P(from where you want to draw the tangents)

3) Draw a perpendicular bisector on OP to intersect at M

4) With OM or OP as radius, draw a circle with center M to intersect the previous circle at A and B

5) Join PA and PB

PA and PB are the required tangents.

Feel free to reach out for any clarification.