Every complex cell has dna in its a. cytoplasm b. membrane c. wall d. nucleusasp i well give 100 points for the first one

D. nucleus

Explanation:

In human cells, most DNA is found in a compartment within the cell called a nucleus.

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8