Re:

GNU Radio
1

** (i) How many bytes does each I or Q component take?

2

** (i) How many bytes does each I or Q component take?

–
Ashish

For complex samples, the file-sink writes native, IEEE-754
single-precision floating-point values into the file, with I and Q
interleaved.

IEEE-754 single-precision is 32-bits, and is the native binary format
used by most CPUs.