The answer is B :),this sentence has to be longer LOL
Answer;
Atomic number Tc = 43 , which is equivalent to the number of protons in nucleus.
Number neutrons = mass number - number of protons = 99 - 43 = 56 neutrons .
Number of electrons = number of protons - charge = 43 - (+7) = 36 electrons
Explanation;
-Atomic number is the number of proton in the nucleus of an atom of a given element. Mass number is the total number of protons and neutrons in the nucleus of an atom. A neutral atom has equal number of protons and neutrons.
-Isotopes are atoms of the same element with the same atomic number but different mass number.
I believe it is A as well
For eukaryotes to produce the next generation through sexual reproduction, two cells must contribute genetic material.
Sexual reproduction, the process through which two individuals of different sexes combine their genetic information to create new species. In the majority of organisms, reproductive cells called gametes, which mate to create a diploid zygote, have chromosomes in their nuclei that carry the genetic material. The zygote grows into a new person. The most common method of reproduction among living things is sexual reproduction. A remarkable variety of offspring, each with a genetic make-up different from that of its parents, may result from sexual reproduction because it allows the rearranging of genetic material both within and between members of one generation. Sexual reproduction is involved.
Learn more about Sexual reproduction here
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