These 5 metals are: zinc,copper,tin,bronze,nickel
Positively charged protons in the nucleus, hope this helps.
The first basic metals on the periodic table are alkali metals.
<span>The following is the role of NaCl and EDTA in DNA isolation, hope it helps:
NaCl provides Na+ ions that will block negative charge from phosphates on DNA.
Negatively charged phosphates on DNA cause molecules to repel each other. The Na+ ions will form an ionic bond with the negatively charged phosphates on the DNA, neutralizing the negative charges and allowing the DNA molecules to come together.</span>
