Atoms of which of the following elements have the most similar chemical properties as cadmium (Cd) atoms?
A Zinc (Zn)
B Gold (Au)
C Copper (Cu)
D Silver (Ag)

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

Determine the reaction and balance the following equations urgent due in the morning

Which of the following has wavelength longer than the wavelength of viable light? a) x rays b) gamma rays c) radios waves d) ultraviolet waves