SI defining constants

Name the exact values of constants that define the base units of International System of Units (SI).
Source: Wikipedia

If there are two boxes, answer in scientific notation. Otherwise, answer the full decimal value.

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Last updated: August 18, 2024

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const	description	value											unit
Δv_Cs	hyperfine transition frequency of Cs-133	9	1	9	2	6	3	1	7	7	0		Hz
c	speed of light in vacuum		2	9	9	7	9	2	4	5	8		m/s
h	Planck constant	6.	6	2	6	0	7	0	1	5		×10^-34	J·s
e	elementary charge	1.	6	0	2	1	7	6	1	3	4	×10^-19	C
k	Boltzmann constant	1.	3	8	0	6	4	9				×10^-23	J/K
N_A	Avogadro constant	6.	0	2	2	1	4	0	7	6		×10²³	mol^-1
K_cd	luminous efficacy of 540 THz radiation								6	8	3		lm/W

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