How many electrons are located in the valence energy level of elements of Group 15?

a-2

b-3

c-4

d-5

D Question 19 Which statement best describes a major difference between different types of elements? The atoms of different elements have different numbers of protons and electrons. Only some elements are composed of atoms with electrons.

What conclusions can you draw about the relationship between chemical structure and dye color?

How are carrot, an amoeba, and a bacterium alike

Elemental iodine (i2) is a solid at room temperature. what is the major attractive force that exists among different i2 molecules in the solid?

Calculate the energy associated with red light with a wavelength of 725 nm

The ideal gas law shows us how a gas will behave under many conditions. The formula is: P V = n R T Where P = pressure, V = volume, n = amount of the substance, R = ideal gas constant, and T = temperature.

The Suns ultraviolent Rays can cause skin damage including sunburn and even skin

Peas contain 250 kJ per 100 g. You would use the equivalent of 600 g of peas if you slept for.

A sample of gas in a balloon has an initial temperature of 21 ∘C and a volume of 1310 L. If the temperature changes to 70 ∘C, and there is no change of pressure or amount of gas, what is the new volume, V2, of the gas?

Which is a waste product of aerobic respiration? A. water B. energy C. oxygen D. glucose