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Interpretation:
The total number of neutrons present in the atom that has
Concept Introduction:
Atomic number for each and every element is a unique one. This is the total number of protons that is present in an atom. As the atom is electrically neutral, it can also be said that the total number of electrons is the atomic number. Atomic number is represented by the symbol Z.
Mass number is the sum of the number of protons and neutrons inside the nucleus of an atom. This gives the number of subatomic particle present inside the nucleus. Mass number is represented by the symbol A.
From atomic number and mass number, the number of each sub atomic particle can be found.
Complete chemical symbol notation can be given as.
An element is a pure substance that cannot be broken by ordinary
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Chapter 3 Solutions
EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
- How many protons are present in the atomic nucleus of nitrogen (based on the atomic number)? A. 7 protons 14 protons 21 protons 35 protons 42 protonsarrow_forwardChoose the combination of answers that most accurately completes the statement.Ionizing radiation removes from atoms. a. protons c. electrons b. waves d. ionsarrow_forwardWhat is an alloy? A. A compound of two metals B. An element of two metals C. A mixture of two metals D. A molecule of two metalsarrow_forward
- A molecule of water is formed when one atom of oxygen is covalently bonded with two atoms of hydrogen. What is the total number of electron pairs that must be shared between the oxygen atom and the hydrogen atoms in order to complete the outer electron shell of all three atoms? a.2 b.3 c.4 d.1 e.5arrow_forwardWhich properties of water best explains why organisms resist temperature changes, although they give off heat during biochemical reactions? A. Density B. Surface Tension C. Capillary Action D. Specific Heatarrow_forwardWhich statement is false? A. Elements are found in compounds and molecules B. compounds are made of elements C. a molecule must be made of at least two atoms D. chemical bonds form between molecules of solute and solvent E. two atoms of oxygen make a molecule of oxygenarrow_forward
- Which type of bond represents a weak chemical bond? a. hydrogen bond b. atomic bond c. covalent bond d. nonpolar covalent bondarrow_forwardA slice of pizza has 500 kcal. If we could burn the pizza and use all the heat to warm a 50-L container of cold water, what would be the approximate increase in the temperature of the water? (note; A Liter of cold water weighs about 1 kg) a. 500 C b. 50C c. 10C d.100Carrow_forwardThe pI for the amino acid in the diagram is? A. 2.3 B. 5.9 C. 10.8 D. 9.6arrow_forward
- The atomic number of sulfur is 16, Sulfur combines with hydrogen by covalent bonding to form a compound, hydrogen sulfide. Based on the number of valence electrons in a sulfur atom, predict the molecular formula of the compound. a. HS b. HS2 c.H2S d. H3S2arrow_forwardWhich biological catalyst lowers the activation energy of a reaction? a. enzyme b. lipid c. salt d. carbohydratearrow_forwardWhat type of nuclear reaction does a CAT scan use? a. Gamma Emission b. Electron Capture c. Beta Decay d. Alpha Decayarrow_forward
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