Which of the following factors contributes to the increase in atomic size within a group in the periodic table as the atomic number increases? an increase in number of protons more shielding of the electrons by the highest occupied energy level fewer electrons in the highest occupied energy level an increase in size of the nucleus

hi,

the answer is d, it has indefinite shape but definite volume.

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whats the meaning of /

in scientific notation, the value of the  speed of light in a vacuum

  will be written as 2.995 * 10^8. when this value is represented in the form of

  a * 10^b, then, a = 2.995 and b = 8.

the value of the speed of light in a vacuum given above can also be rounded up to approximately 300000000. in this case, the scientific notation will be written as 3 *10^8.