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Q104
(CAPF/2026)
Science & Technology › Basic Science (Physics, Chemistry, Biology)
Which one of the following statements is correct?
Result
Your answer:
—
·
Correct:
B
Explanation
Statement (B) is correct. EDTA (Ethylenediaminetetraacetic acid) is a hexadentate ligand, meaning it has six donor atoms (two nitrogen atoms and four oxygen atoms from carboxylate groups) that can bind to a central metal ion, giving it a coordination number of 6.
- Option A: An alpha (α) particle is a helium nucleus (He2+). It consists of 2 protons and 2 neutrons, but has zero electrons.
- Option C: A beta (β) particle is either an electron (charge -1) or a positron (charge +1). It does not have a charge of +2.
- Option D: Carbon and silicon both have four valence electrons and primarily form covalent compounds through electron sharing, as the energy required to lose or gain four electrons to form ionic bonds is too high.
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