Needthe meter is the standard unit for: 1) height 2) length 3) weight 4) mass

length

Explanation:

The metre is defined as the length of the path travelled by light in a vacuum in 1299 792 458 of a second. The metre was originally defined in 1793 as one ten-millionth of the distance from the equator to the North Pole – as a result the Earth's circumference is approximately 40,000 km today.

increased stability in the completion of fluorine's outer shell.

c. 4.54 x 10–12 j happens to be correct