Question

chemical bonding and atomic structure
across
2 atomic number of 1 with 1 valence electron.
3 type of bond where electrons are shared
5 where electrons orbit the atom
8 atomic number of 3 and one valence electron.
9 atomic number of seven with 5 valence electrons
11 the electrons in the outer shell.
12 type of bond where elements from column 1 give electrons to those in column 7
14 same number of protons, different number of neutrons.
16 nuclear member with a positive charge

down
1 atomic number of 12 with 2 valence electrons.
3 atomic number of 17 with seven valence electrons
4 negatively charged particle
6 holds the positive charge in the nucleus together like glue
7 an atom that has gained or lost electons
10 overall charge when the protons and neutrons are the same.
13 atomic number of six with 4 valence electrons.
15 atomic number of 5 with 3 valence electrons

Explanation:

To solve the crossword, we analyze each clue:

Across

1. Atomic number 1, 1 valence electron → Hydrogen (matches the filled "HYDROGEN").
2. Bond with shared electrons → Covalent (filled "COVALENT").
3. Electron orbit region → Shell (or "Orbital", but grid fits "Shell"? Wait, the filled vertical has "SHELL"? Wait, the grid’s vertical (down/across) – let's check:
4. Atomic number 3, 1 valence electron → Lithium (filled "LITHIUM").
5. Atomic number 7, 5 valence electrons → Nitrogen (filled "NITROGEN").
6. Outer shell electrons → Valence (filled "VALENCE").
7. Bond (column 1→column 7 electron transfer) → Ionic (filled "IONIC"? Wait, grid has "IONIC"? Wait, the filled "IONIC" for 12?
8. Same protons, different neutrons → Isotope (grid’s 14: 7 letters, "ISOTOPE").
9. Positive nuclear particle → Proton (grid’s 16: 6 letters, "PROTON").

Down

1. Atomic number 12, 2 valence electrons → Magnesium (filled "MAGNESIUM" vertically).
2. Atomic number 17, 7 valence electrons → Chlorine (filled "CHLORINE"? Wait, grid’s down 3: "CHLORINE"? Wait, the filled "CHLORINE" vertically?
3. Negative particle → Electron (filled "ELECTRON" vertically? Wait, grid’s down 4: "ELECTRON"?
4. Holds nucleus positive charge → Strong (nuclear force, "Strong" or "Gluon"? Wait, grid’s down 6: "STRONG"? No, "Gluon" is too long. Wait, "Strong" (force) – but grid: "STRONG" (6 letters? No, "Strong" is 5. Wait, the filled "STRONG" vertically? Wait, the grid’s down 6: "STRONG" (matches "S" at top? Wait, the vertical "MAGNESIUM" has "M" at top, then "A", "G", "N", "E", "S", "I", "U", "M" – no, "MAGNESIUM" is 10 letters. Wait, the down 1 is "MAGNESIUM" (10 letters: M-A-G-N-E-S-I-U-M).
5. Atom with gained/lost electrons → Ion (filled "ION" vertically? Wait, grid’s down 7: "ION"?
6. Charge when protons=electrons → Neutral (filled "NEUTRAL" vertically?
7. Atomic number 6, 4 valence electrons → Carbon (filled "CARBON" vertically: C-A-R-B-O-N).
8. Atomic number 5, 3 valence electrons → Boron (filled "BORON" vertically: B-O-R-O-N? Wait, "BORON" is B-O-R-O-N? No, B-O-R-O-N is 5 letters? Wait, atomic number 5 is Boron (B), valence 3. Grid’s down 15: "BORON" (B-O-R-O-N? Wait, the filled "BORON" vertically: B-O-R-O-N (5 letters? No, "Boron" is B-O-R-O-N (5 letters? Wait, "Boron" is spelled B-O-R-O-N? No, correct spelling: B-O-R-O-N? Wait, no: B-O-R-O-N is 5 letters? Wait, "Boron" is B (atomic 5), valence 3. So down 15: "BORON".

Example Fill (Key Answers):

• Across 2: Hydrogen
• Across 3: Covalent
• Across 9: Nitrogen
• Down 1: Magnesium
• Down 13: Carbon
• Down 15: Boron

(Note: The filled grid in the image confirms many of these, e.g., "HYDROGEN", "COVALENT", "LITHIUM", "NITROGEN", "VALENCE", "IONIC", "MAGNESIUM", "CARBON", "BORON", etc.)

If you need a specific clue’s answer, let’s pick Across 2:

Atomic number 1, 1 valence electron → element is Hydrogen.

Answer:

Hydrogen