1.90× 10^-27 the no of significant figure is ?
Answers
answer :3
explanation:For a number in scientific notation: N x 10x, all digits comprising N ARE significant by the rules of significant figures, "10" and "x" are NOT significant. e.g 5.02 x 104 has THREE significant figures: "5.02." "10 and "4" are not significant.
rules:-
1.All non-zero numbers ARE significant. The number 33.2 has THREE significant figures because all of the digits present are non-zero.
2. Zeros between two non-zero digits ARE significant. 2051 has FOUR significant figures. The zero is between a 2 and a 5.
3. Leading zeros are NOT significant. They're nothing more than "place holders." The number 0.54 has only TWO significant figures. 0.0032 also has TWO significant figures. All of the zeros are leading.
4. Trailing zeros to the right of the decimal ARE significant. There are FOUR significant figures in 92.00